# Royal Marines

The Royal Marines, also known as the Royal Marines Commandos, and officially as the Corps of Royal Marines, are the United Kingdom's amphibious special operations capable commando force, one of the five fighting arms of the Royal Navy, and provide a company strength unit to the Special Forces Support Group (SFSG). The Royal Marines trace their origins back to the formation of the "Duke of York and Albany's maritime regiment of Foot" on 28 October 1664, and the first Royal Marines Commando unit was formed at Deal in Kent on 14 February 1942 and designated "The Royal Marine Commando".
The Royal Marines have seen action across many conflicts but do not have battle honours as such, but rather the "Great Globe itself" was chosen in 1827 by King George IV in their place to recognise the Marines' service and successes in multiple engagements in every quarter of the world. The Corps has close ties with allied marine forces, particularly the United States Marine Corps and the Netherlands Marine Corps (Dutch: Korps Mariniers).

## History
### Origins

The Royal Marines trace their origins back to 28 October 1664 when the Duke of York and Albany's Maritime Regiment of Foot was formed at the grounds of the Honourable Artillery Company.
The 'first official' unit of English naval infantry, originally called the Duke of York and Albany's Maritime Regiment of Foot and soon becoming known as the Admiral's Regiment, was formed on 28 October 1664, with an initial strength of 1,200 infantrymen recruited from the Trained Bands of London as part of the mobilisation for the Second Anglo-Dutch War. James (later King James VII & II), the Duke of York and Albany, Lord High Admiral and brother of King Charles II, was Captain-General of the Artillery Company, now the Honourable Artillery Company, the unit that trained the Trained Bands.
It was the fifth European Marine unit formed, being preceded by the Spain's Infantería de Marina (1537), the Fanti da Mar of the Republic of Venice (1550), the Portuguese Marine Corps (1610) and France's Troupes de marine (1622). It consisted of six 200-man companies and was initially commanded by Colonel Sir William Killigrew with Sir Charles Lyttleton as lieutenant-colonel. Killigrew had commanded an English regiment in Dutch service, and many of the regiment's initial complement of officers had served there as well.
The Holland Regiment (later The Buffs) was also raised to serve at sea and both of these "Naval" regiments were paid for by the Treasurer of the Navy by Order of Council of 11 July 1665. John Churchill, later the 1st Duke of Marlborough, was a famous member of this regiment. A Company of Foot Guards served as Marines to augment the Marines of the Admiral's Regiment during the key sea battle the Battle of Solebay in 1672. The regiment was disbanded in 1689 shortly after James II was deposed in the Glorious Revolution.
Two marine regiments of the army were raised in 1690. They were the Earl of Pembroke's and Torrington's, later Lord Berkeley's. These two regiments participated in an opposed landing during the Williamite War in Ireland at Cork, Ireland on 21 September 1690 under the command of John Churchill, later Duke of Marlborough.
In 1699 the marine regiments were disbanded, but they were raised again from 1702 to 1713 to fight in the War of the Spanish Succession; their most notable contribution being the capture of Gibraltar in 1704.

### Early British Empire

On 5 April 1755, His Majesty's Marine Forces, fifty Companies in three Divisions, headquartered at Chatham, Portsmouth, and Plymouth, were formed by Order of Council under Admiralty control. Initially Marine field officer ranks were honorary sinecure positions awarded to senior Royal Navy officers. This meant that the furthest a Marine officer could advance was to lieutenant colonel. It was not until 1771 that the first Marine was promoted to colonel. This attitude persisted well into the 1800s. During the rest of the 18th century, they served in numerous landings all over the world, the most famous being the landing at Belle Île on the Brittany coast in 1761. They also served in the American War of Independence, notably in the Battle of Bunker Hill led by Major John Pitcairn.
In 1788 a detachment of four companies of marines, under Major Robert Ross, accompanied the First Fleet to protect a new colony at Botany Bay (New South Wales). Due to an error the Fleet left Portsmouth without its main supply of ammunition, and were not resupplied until the Fleet docked in Rio de Janeiro midway through the voyage. Some scholars contend that the Marines deliberately spread smallpox among Australia's Indigenous population in order to protect the settlement, but this incident does not appear in contemporaneous Marine or government records and most researchers associate the disease outbreak with other causes.
In 1802, largely at the instigation of Admiral the Earl St Vincent, they were titled the Royal Marines by King George III. The Royal Marines Artillery (RMA) was formed as a separate unit in 1804 to man the artillery in bomb ketches. These had been manned by the Army's Royal Regiment of Artillery, but a lawsuit by a Royal Artillery officer resulted in a court decision that Army officers were not subject to Naval orders. As RMA uniforms were the blue of the Royal Regiment of Artillery they were nicknamed the "Blue Marines" and the infantry element, who wore the red uniforms of the British infantry, became known as the "Red Marines", often given the semi-derogatory nickname "Lobsters" by sailors. A fourth division of the Royal Marines, headquartered at Woolwich, was formed in 1805.
During the Napoleonic Wars the Royal Marines participated in every notable naval battle on board the Royal Navy's ships and also took part in multiple amphibious actions. Marines had a dual function aboard ships of the Royal Navy in this period; routinely, they ensured the security of the ship's officers and supported their maintenance of discipline in the ship's crew, and in battle, they engaged the enemy's crews, whether firing from positions on their own ship, or fighting in boarding actions. In the Caribbean theatre volunteers from freed French slaves on Marie-Galante were used to form Sir Alexander Cochrane's first Corps of Colonial Marines. These men bolstered the ranks, helping the British to hold the island until reinforcements arrived. This practice was repeated during the War of 1812, where escaped American slaves were formed into Cochrane's second Corps of Colonial Marines. These men were commanded by Royal Marines officers and fought alongside their regular Royal Marines counterparts at the Battle of Bladensburg. Throughout the war Royal Marines units raided up and down the east coast of America including up the Penobscot River and in the Chesapeake Bay. They fought in the Battle of New Orleans and later helped capture Fort Bowyer in Mobile Bay in what was the last action of the war.
In 1855 the infantry forces were renamed the Royal Marines Light Infantry (RMLI). During the Crimean War in 1854 and 1855, three Royal Marines earned the Victoria Cross, two in the Crimea and one in the Baltic. In 1862 the name was slightly altered to Royal Marine Light Infantry. The Royal Navy did not fight any other ships after 1850 and became interested in landings by Naval Brigades. In these Naval Brigades, the function of the Royal Marines was to land first and act as skirmishers ahead of the sailor infantry and artillery. This skirmishing was the traditional function of light infantry. For most of their history, British Marines had been organised as fusiliers. In the rest of the 19th Century the Royal Marines served in many landings especially in the First and Second Opium Wars (1839–1842 and 1856–1860) against the Chinese. These were all successful except for the landing at the Mouth of the Peiho in 1859, where Admiral Sir James Hope ordered a landing across extensive mud flats.
The Royal Marines also played a prominent role in the Boxer Rebellion in China (1900), where a Royal Marine earned a Victoria Cross.

### Status and roles

Through much of the 18th and 19th centuries Marine officers had a lower standing status than their counterparts in the Royal Navy. A short-lived effort was made in 1907, through the common entry or "Selborne scheme", to reduce the professional differences between RN and RM officers through a system of common entry that provided for an initial period of shared training.
By the early twentieth century the Royal Marines had achieved a high professional status, although there was a serious shortage of junior officers. Numbering about 15,000 during the Edwardian era, enlistment for other ranks was for at least 12 years, with entitlement to a pension after 21 years of service. After basic training new recruits were assigned to one of three land-based divisions and from there to warships as vacancies arose. From 1908 onwards one gun turret on each battleship was manned by RMA gunners. The RMLI continued their traditional role of providing landing parties and shore-based detachments. Specialist positions on board ship, such as postmen, barbers, lamp trimmers and butchers, were reserved for Royal Marines. After 1903 the Royal Marines provided bands for service on board battleships and other large vessels.

### World wars
#### First World War

During the First World War, in addition to their usual stations aboard ship, Royal Marines were part of the Royal Naval Division which landed in Belgium in 1914 to help defend Antwerp and later took part in the amphibious landing at Gallipoli in 1915. It also served on the Western Front. The Division's first two commanders were Royal Marine Artillery Generals. Other Royal Marines acted as landing parties in the Naval campaign against the Turkish fortifications in the Dardanelles before the Gallipoli landing. They were sent ashore to assess damage to Turkish fortifications after bombardment by British and French ships and, if necessary, to complete their destruction. The Royal Marines were the last to leave Gallipoli, replacing both British and French troops in a neatly planned and executed withdrawal from the beaches.
The Royal Marines also took part in the Zeebrugge Raid in 1918. Five Royal Marines earned the Victoria Cross in the First World War, two at Zeebrugge, one at Gallipoli, one at Jutland and one on the Western Front.

#### Between the wars

After the war Royal Marines took part in the allied intervention in Russia. In 1919, the 6th Battalion RMLI mutinied and was disbanded at Murmansk. The Royal Marine Artillery (RMA) and Royal Marine Light Infantry (RMLI) were amalgamated on 22 June 1923. Post-war demobilisation had seen the Royal Marines reduced from 55,000 (1918) to 15,000 in 1922 and there was Treasury pressure for a further reduction to 6,000 or even the entire disbandment of the Corps. As a compromise an establishment of 9,500 was settled upon but this meant that two separate branches could no longer be maintained. The abandonment of the Marine's artillery role meant that the Corps would subsequently have to rely on Royal Artillery support when ashore, that the title of Royal Marines would apply to the entire Corps and that only a few specialists would now receive gunnery training. As a form of consolation the dark blue and red uniform of the Royal Marine Artillery now became the full dress of the entire Corps. Royal Marine officers and SNCO's however continue to wear the historic scarlet in mess dress to the present day. The ranks of private, used by the RMLI, and gunner, used by the RMA, were abolished and replaced by the rank of Marine.

#### Second World War

During the Second World War, a small party of Royal Marines were first ashore at Namsos in April 1940, seizing the approaches to the Norwegian town preparatory to a landing by the British Army two days later. The Royal Marines formed the Royal Marine Division as an amphibiously trained division, parts of which served at Dakar and in the capture of Madagascar. After the assault on the French naval base at Antsirane in Madagascar was held up, fifty Sea Service Royal Marines from HMS Ramillies commanded by Captain Martin Price were landed on the quay of the base by the destroyer HMS Anthony after it ran the gauntlet of French shore batteries defending Diego Suarez Bay. They then captured two of the batteries, which led to a quick surrender by the French.
In addition the Royal Marines formed Mobile Naval Base Defence Organisations (MNBDOs) similar to the United States Marine Corps Defense Battalions. One of these took part in the defence of Crete. Royal Marines also served in Malaya and in Singapore, where due to losses they were joined with remnants of the 2nd Battalion of Argyll and Sutherland Highlanders at Tyersall Park to form the "Plymouth Argylls". The Royal Marines formed one Commando (A Commando) which served at Dieppe. One month after Dieppe, most of the 11th Royal Marine Battalion was killed or captured in an ill staged amphibious landing at Tobruk in Operation Agreement. Again, the Marines were involved with the Argyll and Sutherland Highlanders, this time the 1st Battalion. In 1942 the Infantry Battalions of the Royal Marine Division were re-organised as Commandos, joining the British Army Commandos. The Division command structure became a Special Service Brigade command. The support troops became landing craft crew and saw extensive action on D-Day in June 1944.
A total of four Special Service Brigades (redesignated Commando brigades in December 1944 as the "SS" abbreviation was unpopular) were raised during the war, and Royal Marines were represented in all of them. A total of nine RM Commandos were raised during the war, numbered from 40 to 48. These were distributed as follows:
* 1 Commando Brigade
** 45 (RM) Commando
* 2 Commando Brigade
** 40 (RM) Commando
** 43 (RM) Commando
* 3 Commando Brigade
** 42 (RM) Commando
** 44 (RM) Commando
* 4 Commando Brigade (entirely Royal Marine after March 1944)
** 41 (RM) Commando
** 46 (RM) Commando
** 47 (RM) Commando
** 48 (RM) Commando
1 Commando Brigade took part in first in the Tunisia Campaign and then assaults on Sicily and Normandy, campaigns in the Rhineland and crossing the Rhine. 2 Commando Brigade was involved in the Salerno landings, Anzio, Comacchio, and operations in the Argenta Gap. 3 Commando Brigade served in Sicily and Burma. 4 Commando Brigade served in the Battle of Normandy and in the Battle of the Scheldt on the island of Walcheren during the clearing of Antwerp.
In January 1945, two further RM Brigades were formed, 116th Brigade and 117th Brigade. Both were conventional Infantry, rather than in the Commando role. 116th Brigade saw some action in the Netherlands, but 117th Brigade was hardly used operationally. In addition one Landing Craft Assault (LCA) unit was stationed in Australia late in the war as a training unit. In 1946 the Army Commandos were disbanded, leaving the Royal Marines to continue the Commando role (with supporting Army elements). A number of Royal Marines served as pilots during the Second World War. It was a Royal Marines officer who led the attack by a formation of Blackburn Skuas that sank the Königsberg. Eighteen Royal Marines commanded Fleet Air Arm squadrons during the course of the war, and with the formation of the British Pacific Fleet were well represented in the final drive on Japan. Captains and Majors generally commanded squadrons, whilst in one case Lt Colonel R.C. Hay on HMS Indefatigable was Air Group Co-ordinator from HMS Victorious of the entire British Pacific Fleet.
Throughout the war Royal Marines continued in their traditional role of providing ships detachments and manning a proportion of the guns on Cruisers and Capital Ships. They also provided the crew for the UK's Minor Landing craft, and the Royal Marines Armoured Support Group manned Centaur IV tanks on D Day; one of these is still on display at Pegasus Bridge.
Only one marine (Corporal Thomas Peck Hunter of 43 Commando) was awarded the Victoria Cross in the Second World War for action at Lake Comacchio in Italy. Hunter was the most recent RM Commando to be awarded the medal. The Royal Marines Boom Patrol Detachment under Blondie Haslar carried out Operation Frankton and provided the basis for the post-war continuation of the SBS.

### Post-colonial era

The Corps underwent a notable change after 1945 however, when the Royal Marines took on the main responsibility for the role and training of the British Commandos. As of 2009, since their creation in 1942 Royal Marines Commandos had engaged on active operations across the globe, every year except 1968. Notably they provided the first military unit to perform an air assault insertion by helicopter, during the Suez Crisis in 1956. They were also part of the land element during the 1982 Falklands War.
43 Commando was active as amphibious infantry from 1961 to 1968, and 41 Commando was disbanded in 1981.

### After 1945 and the Cold War

In 1946 the Army Commandos were disbanded, leaving the Royal Marines to continue the commando role (with supporting army elements). During the Cold War the Royal Marines were earmarked to reinforce NATO's northernmost command Allied Forces North Norway. Therefore, 3 Commando Brigade began to train annually in Northern Norway and had large stores of vehicles and supplies pre-positioned there. At the end of the Cold War in 1989 the structure of the Royal Marines was as follows:
* Commandant General Royal Marines, London
** 3 Commando Brigade, Plymouth
*** 40 Commando, Taunton
*** 42 Commando, Bickleigh
*** 45 Commando, Arbroath
*** 29 Commando Regiment, Royal Artillery, Plymouth, one battery in Arbroath, (18× L118 light guns)
*** 4 Assault Squadron, Plymouth (4× LCU Mk.9, 4× LCVP Mk.4, 2× Centurion BARV), served aboard HMS Fearless (L10)
*** 539 Assault Squadron, Plymouth (4× LCU Mk.9, 4× LCVP Mk.4, 2× Centurion BARV), served aboard HMS Intrepid (L11)
*** 59 Independent Commando Squadron, Royal Engineers, Plymouth, one troop in Arbroath
*** 3 Commando Brigade Air Squadron, RNAS Yeovilton, (12× Gazelle AH.1, 6× Lynx AH.1)
*** 2 Raiding Squadron, Royal Marines Reserve, Plymouth
*** 131 Independent Commando Squadron, Royal Engineers (V), Kingsbury, London
*** 289 Commando Battery, Royal Artillery (V), East Ham (6× L118 light guns)
** Special Boat Service, Poole, under operational control of United Kingdom Special Forces
** Comacchio Group, HMNB Clyde, guarded HMNB Clyde and the UK's naval nuclear weapons stored at RNAD Coulport
** Royal Marines Police, Plymouth
** Commando Training Centre Royal Marines, Lympstone
** Royal Marines Band Service RMSoM, Deal
** Royal Marines Reserve
*** RMR Plymouth, Plymouth
*** RMR Bristol, Bristol
*** RMR London, Wandsworth
*** RMR Merseyside, Liverpool
*** RMR Scotland, Edinburgh
*** RMR Tyne, Newcastle
Royal Marines were involved in the Korean War. 41 (Independent) Commando was reformed in 1950, and was originally envisaged as a raiding force for use against North Korea. It performed this role in partnership with the United States Navy until after the landing of United States Army X Corps at Wonsan. It then joined the US's 1st Marine Division at Koto-Ri. As Task Force Drysdale with Lt. Col. D.B. Drysdale RM in command, 41 Commando, a USMC company, a US Army company and part of the divisional train fought their way from Koto-Ri to Hagaru after the Chinese had blocked the road to the North. It then took part in the famous withdrawal from Chosin Reservoir. After that, a small amount of raiding followed, before the Marines were withdrawn from the conflict in 1951. It received the Presidential Citation after the USMC got the regulations modified to allow foreign units to receive the award.
After playing a part in the long-running Malayan Emergency, the next action came in 1956, during the Suez Crisis. Headquarters 3 Commando Brigade, and Nos 40, 42 and 45 Commandos took part in the operation. It marked the first time that a helicopter assault was used operationally to land troops in an amphibious attack. British and French forces defeated the Egyptians, but after pressure from the United States, and French domestic pressure, they backed down.
In September 1955 45 Commando was deployed to Cyprus to undertake anti-terrorist operations against the EOKA guerrillas during the independence war against the British. The EOKA were a small, but powerful organisation of Greek Cypriots, who had great local support from the Greek community. The unit, based in Malta at the time travelled to the Kyrenia mountain area of the island and in December 1955 launched Operation Foxhunter, an operation to destroy EOKA's main base.
Further action in the Far East was seen during the Indonesia–Malaysia confrontation. Nos 40 and 42 Commando went to Borneo at various times to help keep Indonesian forces from worsening situations in the neighbouring region, in what was an already heated part of the world, with conflicts in Cambodia, Laos and Vietnam. During the campaign there was a company-strength amphibious assault by Lima Company of 42 Commando at the town of Limbang to rescue hostages. The Limbang raid saw three of the 150 marines involved decorated, L company 42 commando are still referred to today as Limbang Company in memory of this archetypal commando raid.
In January 1964, part of the Tanzanian Army mutinied. Within 24 hours elements of 41 Commando had left Bickleigh Camp, Plymouth, Devon, and were travelling by air to Nairobi, Kenya, continuing by road into Tanzania. At the same time, Commandos aboard HMS Bulwark sailed to East Africa and anchored off-shore from Dar es Salaam, Tanzania. The revolt was put down and the next six months were spent in touring Tanzanian military out-posts disarming military personnel.
From 1969 onwards, Royal Marine units regularly deployed to Northern Ireland during The Troubles, during the course of which 13 were killed in action. A further eleven died in the Deal barracks bombing of the Royal Marines School of Music in 1989. Between 1974 and 1984, the Royal Marines undertook three United Nations tours of duty in Cyprus. The first was in November 1974, when 41 Commando took over the Limassol District from the 2nd Battalion of the Guards Brigade, following the Turkish invasion, and became the first commando to wear the light blue berets of the UN when they began the Corps' first six-month tour with the UN forces in Cyprus (UNIFCYP).
The Falklands War provided the backdrop to the next action of the Royal Marines. Argentina invaded the islands in April 1982. A British task force was immediately despatched to recapture them, and given that an amphibious assault would be necessary, the Royal Marines were heavily involved. 3 Commando Brigade was brought to full combat strength, with not only 40, 42 and 45 Commandos, but also the 2nd and 3rd Battalions of the Parachute Regiment attached. The troops were landed at San Carlos Water at the western end of East Falkland, and proceeded to "yomp" across the entire island to the capital, Stanley, which fell on 14 June 1982 to 2nd Battalion The Parachute Regiment. A Royal Marines divisional headquarters was deployed, under Major-General Jeremy Moore, who was commander of British land forces during the war.
The main element of 3 Commando Brigade was not deployed in the 1991 Gulf War. However, 24 men from K Company, 42 Commando Royal Marines were deployed as six-man teams aboard two Royal Navy destroyers and frigates. They were used as ship boarding parties and took part in numerous boardings of suspect shipping. There were also further elements deployed to provide protection of shipping whilst in ports throughout the Gulf. The main element of 3 Commando Brigade was deployed to northern Iraq in the aftermath to provide aid to the Iraqi Kurds as part of Operation Safe Haven.
In 1992 recruiting into the RM Band Service was opened to females. From 2000 onwards, the Royal Marines began converting from their traditional light infantry role with the introduction of the Commando 21 concept, an emphasis on force protection leading to the introduction of the Viking, the first armoured vehicle to be operated by the Royal Marines for half a century.
Note: "(V)" denoted British Army reserve units.

## Current status and deployment
### Personnel

The Royal Marines are part of His Majesty's Naval Service, alongside the Royal Navy and the Royal Fleet Auxiliary, and they are under the full command of the Fleet Commander. Despite that, the rank structure of the Royal Marines is the same as that of the British Army. Uniquely, in the Royal Marines, officers and all other ranks undergo initial, commando and specialist training together at the Commando Training Centre, Royal Marines (CTCRM).
On average, 26,000 men apply to join the Royal Marines Commandos every year, but only 400 make it.
At its height in 1944 during the Second World War, more than 70,000 men served in the Royal Marines. Following the Allied victory the Royal Marines were quickly reduced to a post-war strength of 13,000. When National Service was ended in 1960, the Marines were again reduced, but this time to an all Commando-trained force of 9,000 personnel. As of 1 January 2021, the Royal Marines had a strength of 5,968 Regulars, and a combined strength of 6,500 when including reserves. The Royal Marines are also the only British naval unit capable of conducting amphibious operations at brigade level.

### Equipment
#### Light weapons

The basic personal weapon of the Royal Marines Commandos is the 5.56mm C8 carbine rifle, sometimes fitted with the L123A3 underslung grenade launcher. Support fire is provided by the L7A2 General Purpose Machine Gun (GPMG) and the L111A1 heavy machine gun (which is often mounted on an armoured vehicle); indirect fire is by the L16A2 81mm mortar. Sniper rifles used include the L115A3, produced by Accuracy International. More recently the L129A1 has come into service as the designated marksman rifle. Other weapons include the Javelin anti tank guided missile, the NLAW disposable anti tank missile, MATADOR anti-structure recoilless rifle, the L131A1 pistol and the Fairbairn–Sykes fighting knife. The Royal Marines are in the process of replacing all of their L85 rifles with the L119 and the KS-1 (L403).

#### Armour

The Royal Marines maintain no heavy armoured units, instead, they operate a fleet of lightly armoured and highly mobile vehicles intended for amphibious landings or rapid deployment. The primary armoured fighting vehicle operated by the Viking Squadron is the BvS 10 Viking All Terrain Armoured Vehicle. Other, lighter vehicles include the Land Rover Wolf, and the Jackal 2 (MWMIK) protected patrol vehicle.

#### Artillery

Field artillery support is provided by 29th Commando Regiment Royal Artillery of the British Army using the L118 Light Gun, a 105 mm towed howitzer. The regiment is Commando-trained.

#### Aviation

The Commando Helicopter Force of the Fleet Air Arm provides transport helicopters in support of the Royal Marines. It currently uses both Merlin HC4/4A medium-lift transport and Wildcat AH1 light transport/reconnaissance helicopters to provide direct aviation support for the Corps. In addition, the Royal Air Force provides Chinook heavy-lift and Puma HC2 medium-lift transport helicopters, and the British Army provides Apache AH-64E attack helicopter gunship support.

#### Vessels

The Royal Marines operate a varied fleet of military watercraft designed to transport troops and materiel from ship to shore or conduct river or estuary patrols. These include the Mk10 Landing Craft Utility and the Mk5b Landing Craft Vehicle Personnel, and the BAE Fast Interceptor Craft and MK 11 Shallow Water Combat Submersible used by the Special Boat Service. Other smaller amphibious craft such as the Offshore Raiding Craft, Rigid Raider and Inflatable Raiding Craft are in service in much greater numbers.
* Royal Marines equipped for Arctic warfare during an exercise in Norway
* BvS 10 Vikings of the Viking Squadron on exercise
* Royal Marines Landing Craft Utility (LCU) Mk10
* A Royal Marines Landing Craft Vehicle Personnel (LCVP) Mk5
* Royal Marines Landing Craft Air Cushion (LCAC)

## Organisation
### Command structure

The overall head of the Royal Marines is King Charles III, in his role as Commander-in-Chief of the British Armed Forces. The ceremonial head of the Royal Marines is the Captain General Royal Marines. In October 2022 King Charles was announced as the new Captain General on the occasion of the 358th anniversary of the foundation of the corps. Full Command of the Royal Marines is vested in the Fleet Commander (FLTCDR).
The operational capability of the corps comprises a number of battalion-plus sized units, of which six are designated as "commandos":
* Commando Units
** 40 Commando, Royal Marines (known as Forty Commando) based at RM Norton Manor, Taunton, Somerset, England
** 45 Commando, Royal Marines (known as Four Five Commando) based at RM Condor, Arbroath, Angus, Scotland
* Maritime Security
** 42 Commando, Royal Marines (known as Four Two Commando) based at RM Bickleigh, Plymouth, Devon, England
* Nuclear Deterrent Protection
** 43 Commando Fleet Protection Group, Royal Marines based at HM Naval Base Clyde, Faslane, Argyll and Bute.
* Intelligence, Surveillance and Target Acquisition
** 30 Commando (Information Exploitation) Group, Royal Marines based at Stonehouse Barracks, Plymouth
*** Surveillance Reconnaissance Squadron (SRS)
**** Brigade Patrol Troop
* Raiding
** 47 Commando (Raiding Group), Royal Marines based at RM Tamar, Devonport (previously 1 Assault Group RM)
* Logistic Support
** Commando Logistic Regiment based at RM Chivenor, Devon
*** Viking Squadron is an element of the Royal Marines that operates the Viking BvS 10 All Terrain Vehicle. It is based at Stanley Barracks, Bovington Garrison in Dorset.
With the exception of 43 Commando Fleet Protection Group and the Commando Logistic Regiment, which are each commanded by a full colonel, each of these units is commanded by a lieutenant-colonel of the Royal Marines, who may have sub-specialised in a number of ways throughout their career.
* Royal Marines Band Service
** Band of HM Royal Marines, Portsmouth (HMS Nelson)
** Band of HM Royal Marines, Plymouth (HMS Raleigh)
** Band of HM Royal Marines, Scotland (MoD Caledonia, Rosyth)
** Band of HM Royal Marines, HMS Collingwood (replacing the Band of Britannia Royal Naval College)
** Band of HM Royal Marines, Commando Training Centre Royal Marines
** The Band of the Royal Marines School of Music in Portsmouth (The Training Band)

### UK Commando Force

Operational command of the five commandos and the Commando Logistics Regiment is delegated to UK Commando Force, of which they are a part. Based at Stonehouse Barracks, the brigade exercises control as directed by either CINCFLEET or the Permanent Joint Headquarters. 30 Commando Information Exploitation Group is a battalion-sized formation providing information operations capabilities, life support and security for the Brigade Headquarters.
43 Commando Fleet Protection Group Royal Marines, responsible for the security of the United Kingdom's nuclear deterrent and other security-related duties was originally outside the brigade, but was incorporated into it from April 2012. It also provides specialist boarding parties and snipers for the Royal Navy worldwide, for roles such as embargo enforcement, counter-narcotics, counter-piracy and counter-insurgency activities of the Royal Navy. It is the largest unit in the brigade, at 790 strong.

### Other elements

The other elements of the Royal Marines outside of the UK Commando Force are:
* Commando Training Centre: This is the training unit for the entire corps, and consists of three separate sections:
** Commando Training Wing: This is the initial basic commando training section for new recruits to the Royal Marines, and the UK Forces All Arms Commando Course.
** Specialist Wing: This provides specialist training in the various trades which Marines may elect to join once qualified and experienced in a Rifle Company.
** Command Wing: This provides command training for both officers and NCOs of the Royal Marines.
* Royal Marines Band Service provides regular bands for the Royal Navy and provides expertise to train RN Volunteer Bands. Musicians have an important secondary roles as medics, field hospital orderlies, CBRN specialists and any other roles that may be required of them. Personnel may not be commando trained, usually wearing the dark blue beret instead of green; until 2017, the band service was the only branch of the Royal Marines to admit women.

### Structure of a commando

40 and 45 Commando are each organised into six companies, further organised into platoon-sized troops, as follows:
* Command company
** Main HQ
** Tactical HQ
** Reconnaissance Troop with a sniper section
** Mortar Troop
** Anti-Tank (AT) Troop
** Medium Machine Gun Troop
* 2× Close Combat Companies
** Company Headquarters
** 3× Close Combat Troops
* 2× Stand Off Companies
** Company Headquarters
** Heavy Machine Gun (HMG) Troop
** AT Troop
** Close Combat Troop.
* Logistic Company
** A Echelon 1
** A Echelon 2
** FRT (Forward Repair Team)
** RAP (Regimental Aid Post)
** B Echelon
In general a rifle company Marine will be a member of a four-man fire team, the building block of commando operations. A Royal Marine works with their team in the field and shares accommodation if living in barracks. This structure is a recent development, formerly Commandos were structured similarly to British Army light infantry battalions.

### Commando Helicopter Force

The Commando Helicopter Force (CHF) forms part of the Fleet Air Arm. It comprises three helicopter squadrons and is commanded by the Joint Aviation Command. It consists of both Royal Navy (RN) and Royal Marines personnel. RN personnel need not be commando trained. The CHF is neither under the permanent control of UK Commando Force nor that of the Commandant General Royal Marines, but rather is allocated to support Royal Marines units as required. It uses both Merlin HC4/4A medium-lift and Wildcat AH1 light transport/reconnaissance helicopters to provide aviation support for the Royal Marines.

## Future Commando Force (FCF) Programme

On 11 April 2017 the First Sea Lord, Admiral Sir Philip Jones, announced that the Royal Marines Commandos were to be restructured, and will be capable of deploying on special operations as part of the Future Commando Force (FCF) Programme. Indeed, the Ministry of Defence has also said that under the FCF programme, the Royal Marines Commandos will take on many of the traditional tasks of the SAS and SBS, alongside a new Army Ranger Regiment. As part of this programme, Navy Command is also creating the staff and intellectual horsepower for a land littoral strike division programme. An example of the FCF was depicted by young engineering graduates from the UK Naval Engineering Science and Technology forum (UKNEST). There will be two Littoral Response Groups: One based East of Suez, one based in the High North. On 27 June 2020, the Royal Marines announced they will adopt a new uniform with the MultiCam camouflage instead of the MTP camo.

## Selection
### Process

Royal Marine Commandos are required to undergo the longest and one of the most physically demanding specialist infantry training courses in the world. Recruit training lasts for 36 weeks for Royal Marine Commandos and 64 weeks for Royal Marine Commando Officers. Potential recruits must be aged 16 to 32 (18 to 25 for Commissioned Officers). Applicants must undertake a series of interviews, medical tests, an eye/sight test, psychometric tests, a PJFA (pre-joining fitness Assessment), a 5-day CPC (candidate preparation course), and a 4-week ROP (recruit orientation phase). If an applicant successfully completes all of these phases, then they will get selected for a place in mainstream recruit training, which will take place at CTCRM (commando training centre Royal Marines) in Lympstone, Devon, UK. A large proportion of training is carried out on Dartmoor's inhospitable terrain and Woodbury Common woodland.

### Training

Throughout recruit training, Royal Marines Commando recruits learn and develop a vast amount of knowledge and warfighting skills such as weapons handling, marksmanship, proficiency with a variety of different firearms and weapon systems, unarmed and armed close quarters combat (CQC), develop elite levels of physical fitness and mental resilience, demolition, reconnaissance, small team tactics, small boat operations, breaching, raiding, direct action, SERE training, fieldcraft skills such as camouflage and stalking, survival skills, bushcraft, mountaineering, fast-roping (helicopter), abseiling, vertical assault, underwater escape, chemical biological radiological nuclear (CBRN) training, military communications and signals, map reading and navigation, leadership and teamwork skills, first aid, patrolling and sentry duty, amphibious landings training, personal administration, and marching and parade ground skills.
The best recruit to finish training is awarded the Kings Badge. King George V directed that his Royal Cypher, surrounded by a laurel wreath, would be known as the King's Badge, and would be awarded to the best all round recruit in the King's Squad, provided that he was worthy of the honour. The badge was to be carried on the left shoulder, and worn in every rank. The King's Badge is not awarded to every squad, and is only presented if a recruit measures up to the very exacting standards required.
Throughout their career, a Royal Marine Commando can specialise in a number of different roles upon completion of their respective courses after spending one to two years as a general duties (GD) rifleman at a unit. Examples of some specialisations and different courses includes the mountain leader (ML), physical training instructor (PTI), Assault Engineer (AE), Royal Marines police (RMP), sniper (S), medical assistant (MA), pilot, reconnaissance operator (RO), drill instructor (DL), driver (D), clerk (C), signaller (SI), combat intelligence (CI), armourer (A), and heavy weapons (HW). Royal Marines can also apply for swimmer canoeist/Special Boat Service selection (SBS) or any other branch of the UKSF. All Royal Marines will also conduct training exercises on differing military skills on a regular basis including development in mountain, arctic, jungle, amphibious and desert warfare. They can also be involved in exchange training programs with other countries' forces – particularly the United States Marine Corps and the Netherlands Marine Corps/Korps Mariniers.

## Museum

The Royal Marines Museum (established in October 1958) is an institution dedicated to the history of the Royal Marines. In 2011, it became part of the National Museum of the Royal Navy, which has since been the executive public body of the museum in the Ministry of Defence. It will soon be moving from Eastney Barracks to Portsmouth Dockyard.

## Customs
### Traditions

The Royal Marines have a proud history and unique traditions. With the exceptions of "Gibraltar" and the laurel wreath for the Battle of Belle Island, their colours (flags) do not carry battle honours in the manner of the regiments of the British Army or of the US Marine Corps, but rather the "globe itself" as a symbol of the Corps.
The heraldic badge of the Royal Marines commemorates the history of the Corps. The Lion and Crown denotes a Royal regiment. King George III conferred this honour in 1802 "in consideration of the very meritorious services of the Marines in the late war." The "Great Globe itself" was chosen in 1827 by King George IV in place of battle honours to recognise the Marines' service and successes in multiple engagements in every quarter of the world. The laurels are believed to honour the gallantry they displayed during the investment and capture of Belle Isle, off Lorient, in April–June 1761. The word Gibraltar refers to the Capture of Gibraltar by a force of Anglo-Dutch Marines in 1704 and the subsequent defence of the strategic fortress throughout a nine-month siege against a numerically superior Franco-Spanish force. Their determination and valour throughout the siege led to a contemporary report published in The Triumphs of Her Majesty's Arms in 1707 to announce:
   Encouraged by the Prince of Hesse, the garrison did more than could humanly be expected, and the English Marines gained an immortal glory
There are no other battle honours displayed on the colours of the four battalion-sized units of the current Corps. The Latin motto "Per Mare Per Terram" translates into English as "By Sea By Land". Believed to have been first used in 1775, this motto describes the Royal Marines ability in fighting both afloat on-board ships of the Royal Navy as well as ashore in their many land engagements. The fouled anchor, incorporated into the emblem in 1747, is the badge of the Lord High Admiral, and shows that the Corps is part of the Naval Service.
The regimental quick march of the Corps is "A Life on the Ocean Wave", while the slow march is the march of the Preobrazhensky Regiment, awarded to the Corps by Admiral of the Fleet Earl Mountbatten of Burma on the occasion of the Corps's tercentenary in 1964. Lord Mountbatten was Life Colonel Commandant of the Royal Marines until his murder by the IRA in 1979.
The Royal Marines are allowed by the Lord Mayor of the City of London to march through the City as a regiment in full array. This dates to the charter of Charles II that allowed recruiting parties of the Admiral's Regiment of 1664 to enter the city with drums beating and colours flying.

### Uniforms

Modern Royal Marines uniforms are broadly similar to British Army uniforms but include a number of distinctive uniform items. These include the green "Lovat" shade of service dress uniform; the green beret (for those who have passed the commando course) or navy blue beret with a scarlet patch behind the badge (for those who have not); dark blue parade dress worn with either the white Wolseley Pattern Helmet (commonly referred to as "pith helmet") or white and red peaked cap; the scarlet and blue mess dress for officers and senior non-commissioned officers; and the white hot-weather uniform of the Band Service.
For historical information regarding Marine uniforms, see Uniforms of the Royal Marines.

### Ranks and insignia

The Royal Marines rank alongside their army equivalents. However, when on the books of any HM Ship or Naval Establishment, Royal Marines were subject to the Naval Discipline Act 1957. In those circumstances, many officer ranks in the Royal Marines formerly enjoyed greater status. Second lieutenants were equivalent to sub lieutenants and ranks from lieutenant to major were considered equivalent to one rank higher (OF-2 to OF-4). Lieutenant colonels were considered equivalent to RN captains with less than six years in the rank, and colonels were equivalent to captains with more than six years seniority. This state of affairs ended on 1 July 1999, when Royal Marine officer ranks were fully aligned with those of the army.
Royal Marines officer rank insignia :
| NATO Code | OF-9 | OF-8 | OF-7 | OF-6 | OF-5 | OF-4 | OF-3 | OF-2 | OF-1 | OF-1 | OF(D) |
| United Kingdom Rank Insignia | | | | | | | | | | | |
| Rank title: | General | Lieutenant General | Major General | Brigadier | Colonel | Lieutenant Colonel | Major | Captain | Lieutenant | Second Lieutenant | Officer Cadet |
Royal Marines other rank insignia :
| NATO Code | OR-9 | OR-8 | OR-7 | OR-6 | OR-5 | OR-4 | OR-3 | OR-2 |
| United Kingdom Rank Insignia (View) | | | | | | | | No insignia |
| Rank Title: | Warrant officer class 1 | Warrant officer class 1 | Warrant officer class 2 | Colour sergeant | Sergeant | Sergeant | Corporal | Lance corporal | Marine |
| Abbreviation: | WO1 | WO1 | WO2 | CSgt | Sgt | Sgt | Cpl | LCpl | Mne |

#### Captain General

The current uniform and insignia worn by the Captain General Royal Marines, presently King Charles III, is the uniform and insignia of field marshal, consisting of two crossed batons surrounded by yellow leaves below a Crown.
| Rank | Insignia |
| Captain General Royal Marines | |
However, as Captain General Royal Marines, Prince Harry was instead entitled to wear crossed batons surrounded by a laurel wreath, crown above, i.e. the rank insignia of a Major General. Despite this, Prince Harry, at least on some occasions, opted to wear the rank insignia of a Colonel, traditionally worn by some Colonels-in-chief in the British Army.

## Associations with other regiments and marine corps
### Argyll and Sutherland Highlanders

Early connections date from Balaclava in the Crimean War and Lucknow during the Indian Rebellion of 1857, but the main association stems from World War II. In July 1940, after the fall of Dunkirk, the 5th Battalion, Argyll and Sutherland Highlanders served with the Royal Marine Brigade for over a year. When the battleships HMS Prince of Wales and HMS Repulse were sunk in December 1941, the Royal Marines survivors joined up with the remnants of the 2nd Battalion, in the defence of Singapore. They formed what became known as 'The Plymouth Argylls', after the association football team, since both ships were Plymouth manned. Most of the Highlanders and Marines who survived the bitter fighting were taken prisoner by the Japanese. The Royal Marines inter-unit rugby football trophy is the 'Argyll Bowl', presented to the Corps by the Regiment in 1941.

### Princess of Wales's Royal Regiment

The fore-bearer regiments of the Princess of Wales's Royal Regiment, 31st (Huntingdonshire) Regiment of Foot was initially raised as amphibious troops. They served as Marines for a period. To this day one officer from the Royal Marines serves with the PWRR and Vice Versa. Also the Royal Marine Lanyard is worn by all ranks in Service Dress and Number 2 Dress uniform and barrack dress of PWRR.

### United States Marine Corps

The Royal Marines and the United States Marine Corps have close cultural links arising from the Special Relationship, having trained together and fought together on multiple occasions.

### Barbados Defence Force

Close links have existed between the Royal Marines and the Barbados Defence Force since 1985 when a bond was established following a series of cross-training exercises in the Caribbean. The Alliance was approved by HM the Queen in 1992.

### Netherlands Marine Corps

The Royal Marines have close links with the Royal Netherlands Marine Corps, with whom they conduct NATO exercises throughout the year. Units of the Royal Netherlands Marine Corps work in close co-operation with 3 Commando Brigade of the Royal Marines. Operational units of the Royal Netherlands Marine Corps are fully integrated into this brigade. This integration is known as the United Kingdom-Netherlands Landing Force and is a component of the United Kingdom-Netherlands Amphibious Force as a key strike force during the Cold War to strengthen the Nordic area.

### French 9th Marine Infantry Brigade (former 9th Light Armoured Marine Brigade)

The 9th Marine Infantry Brigade (9$^e$ Brigade d'Infanterie de Marine, 9$^e$ BIMa) is a Marine infantry brigade which is one of the two designated amphibious brigades in France. It is unique in being the only 'All Marine' Brigade in the French Army; the other amphibious brigade, 6th Light Armoured Brigade (6$^e$ Brigade Légère Blindée, 6$^e$ BLB), is composed of a mix of cap badges. 9$^e$ BIMa is also a light armoured brigade, formed of two Marine infantry regiments (2$^e$ RIMa and 3$^e$ RIMa — Régiments d'Infanterie de Marine) and a tank battalion.