# List of military engagements of World War I

This list of military engagements of World War I covers terrestrial, maritime, and aerial conflicts, including campaigns, operations, defensive positions, and sieges. Campaigns generally refer to broader strategic operations conducted over a large bit of territory and over a long period of time. Battles generally refer to short periods of intense combat localized to a specific area and over a specific period of time. However, use of the terms in naming such events is not consistent. For example, the First Battle of the Atlantic was more or less an entire theatre of war, and the so-called battle lasted for the duration of the entire war.

## European theatre (1914–1918)
### Western Front (1914–1918)

The Western Front comprised the fractious borders between France, Germany, and the neighboring countries. It was infamous for the nature of the fight that developed there; after almost a full year of inconclusive fighting, the front had become a giant trench line stretching from one end of Europe to the other.
1914
* Battle of Liège
The Battle of Liège was the first battle of the war, and could be considered a moral victory for the allies, as the heavily outnumbered Belgians held out against the German Army for 12 days. From 5 to 16 August 1914, the Belgians successfully resisted the numerically superior Germans, and inflicted surprisingly heavy losses on their aggressors. The German Second Army, comprising 320,000 men, crossed into neutral Belgium in keeping to the Schlieffen Plan, with the ultimate goal of attacking France from the north. Liège was key strategically as it held a position at the head of a pass through the Ardennes, which made it the best possible route into the heart of Belgium itself.
The city was surrounded by a ring of 12 heavily armed forts, garrisoned by 70,000 men under the command of Gérard Leman. A night attack on 5 August was repulsed with heavy losses to the Germans to the extreme surprise of the supremely confident German army. The next day, rather than confront the forts in battle, the German commander Erich Ludendorff attacked the city through the back, through a break in the line of fortresses that the Belgians had intended to fortify, but never did so. Although they succeeded in capturing the city, the Germans knew that they could not continue advancing troops into Belgium without first breaking down the forts. Aided by 17-inch Howitzers, the Germans finally succeeded in bringing down the forts on 16 August.
The unprecedented Belgian resistance seriously prolonged the opening German assault at the outbreak of World War I, allowing France and Britain time to organize themselves and a defense of Paris. In addition, it was an important moral victory for the Allies.
* Battle of the Frontiers
The early French initiative, to capture territory lost to the Germans in the 1870–1871 Franco-Prussian War, which France started, was played out in a series of frontier battles between the Germans and the French, known collectively as the Battle of the Frontiers. The battles at Mulhouse, Lorraine, the Ardennes, Charleroi, and Mons were launched more or less simultaneously, and marked the collision of the German and French war plans, the Schlieffen Plan and Plan XVII, respectively.
* Battle of Mülhausen
The Battle of Mülhausen was the opening attack by the French against the Germans. The battle was part of a French attempt to conquer the province of Alsace, which had been lost as a consequence of having lost the Franco-Prussian War of 1870–1871, as it had a majority of ethnic Germans. A French force under General Louis Bonneau detached from the French First Corps and invaded the frontier on August 8, 1914. Opposing them was the German 7th Division. The capture of the area, preordained by the French Plan XVII, was to boost national pride—and to provide a guard force for the flank of subsequent invasions.
The French quickly captured the border town of Altkirch with a bayonet charge. Bonneau, suspicious of the little German resistance, was wary of a carefully planned German trap. However, under orders the next day he advanced to Mülhausen, capturing it with little effort, for the Germans had already abandoned it.
In France, the conquering of the German city Mülhausen, without a fight, was celebrated greatly. However, with the arrival of German reserves from Straßburg, the tides were turned, and the Germans mounted a counterattack on nearby Cernay. Unable to mount an all-encompassing defense, and unable to call on reserves of his own, Bonneau began a slow withdrawal from the region. Support troops hastily sent by the French commander-in-chief Joseph Joffre arrived too late to prevent Bonneau from retiring. Joffre was immensely angry with Bonneau, charging him with a "lack of aggression" and immediately relieving him of command. Realizing the psychological magnitude of the loss, he assembled a force, led by Paul Pau, which tried unsuccessfully to recapture the province.
* Battle of Lothringen
The invasion and recapture of Lorraine formed one of the major parts of the French pre-war strategy, Plan XVII. The loss of Lorraine (and Alsace; see above) to the Prussians in the 1870–1871 Franco-Prussian War was seen as a national humiliation by the public and military alike, and was at the forefront of their minds for the next war against the Germans.
The battle was initiated by the French First and Second armies. The First, led by General Auguste Dubail, intended to take Sarrebourg, whilst the Second, led by General Noel de Castelnau, intended to take Morhange. Both towns were well fortified, and the task of defending them fell to Crown Prince Rupprecht, who had overall control of the German Sixth and Seventh armies.
Rupprecht adopted a strategy in which he would fall back under the French attacks, then counter-attack once he lured the French all the way to his fortifications. As the French army advanced, it met stern resistance in the form of German artillery and machine-gun fire. Army Chief of Staff Helmuth von Moltke authorized a more aggressive tactic soon after, and on August 20, the German army started to roll back the French. Caught by surprise and without the assistance of entrenched positions, the Second Army was pushed back quickly, eventually into France itself. A gap was exposed between the forces in Mulhouse and those in Lorraine; the forces in Mulhouse were withdrawn to keep the gap from being taken advantage of by the Germans.
Diverging from the Schlieffen Plan, Rupprecht received reinforcements and attacked the French line near the Trouée de Charmes; however, through the use of reconnaissance aircraft, the French spotted the German buildup, and were able to build an adequate defence. Thus the German gains were minimized, and were eradicated by a following French counter-assault on the 25th. Fighting continued there until the end of August, and quickly ground into a stalemate and trench warfare.
* Battle of the Ardennes
The Battle of Ardennes, fought between 21 and 23 August 1914, was another of the early frontier battles, conducted during the first month of the war. The battle was sparked by the mutual collision of French and German invasion forces in the lower Ardennes Forest.
The pre-war French strategy expected German forces in the area to be light, and the French light, rapid firing artillery was expected to convey an advantage in forested terrain over the bigger German guns. Instead, it became increasingly apparent to all of the commanders in the region that a significant enemy presence was gathering, for the Germans had planned an offensive through the area.
The sets of armies joined battle on both sides. General Pierre Ruffey's Third Army to the south and Fernand de Langle de Cary's Fourth Army to the north, fighting Germany's Fourth, led by Duke Albrecht, and Fifth army, led by Crown Prince Wilhelm.
The German troops started moving through the forest on 19 August. Conditions worsened, and by the time the two armies met, the forest was covered in a deep fog, resulting in the two forces stumbling into one another. At first, the French took the Germans as a light screening force; however, in reality the French were heavily outnumbered. The first day of the battle consisted of light skirmishes; the main battle did not begin until 21 August.
According to the pre-war French strategy document, Plan XVII, German forces in the area were only expected to be light, with French light, rapid-firing artillery proving advantageous in a wooded terrain such as that found in the Ardennes. However, what emerged was totally opposite; the French eagerly charged at German positions in the woods, and were mowed down by machine-gun fire. The French armies retreated hurriedly in the face of superior German tactical positioning, and the Germans chased them all the way back into the French border. In addition to losing a key strategic position, the French forfeited iron resources in the region as well.
* Battle of Charleroi
The Battle of Charleroi, another of the frontier battles, was an action taking place 12–23 August 1914. The battle was joined by the French Fifth Army, advancing north towards the River Sambre, and the German Second and Third armies, moving southwest through Belgium. The Fifth army was meant to join the Third and Fourth armies in their attack through the Ardennes. However, this plan was put into effect assuming the Germans were not considering an assault further north, through Belgium—which was the German plan all along. Charles Lanrezac, commander of the Fifth Army, was strongly against the idea, fearing an attack from the north. However Joseph Joffre, chief-of-staff, rejected any such idea; after much persuasion, Lanrezac finally convinced him to move the Fifth Army northwards.
However, by the time the Fifth Army arrived, units of the German Second Army were already in the area. Joffre authorized an attack across the Sambre, predicting that the German force had 18 divisions, comparable to Lanrezac's 15, plus another 3 British reinforcements (the British Expeditionary Force). However, Lanrezac predicted much higher numbers, closer to the actual number—32 German divisions. He preferred to wait for reinforcements, however that same day the Germans attacked across the river and established two beachheads, neither of which fell despite several French counterattacks.
The next day, the main attack began; the fighting carried on through the day, and into the next. The French centre suffered severe losses and retreated; but the west and east flanks both held their ground. However, the retreat of cavalry divisions to the far west exposed the French west flank. With news of his situation, and the fact that his flanks could give and be completely enwrapped, Lanrezac ordered a general retreat into northern France.
* Siege of Maubeuge
The French town of Maubeuge was a major fort on the French side of the border. With a junction of no fewer than five major railway lines, it was recognized as a key strategic position by both sides; hence the construction of 15 forts and gun batteries ringing it, a total of 435 guns, and a permanent garrison of 35,000 troops. These were further bolstered by the choosing of the town as the advance base of the British Expeditionary Force. However, when these and the French Fifth Army retreated following the events at Charleroi, the town was cut off from allied support, and subsequently besieged on August 25. The German heavy artillery succeeded in demolishing the key forts around the city, and General Joseph Anthelme Fournier, in command of the garrison in the city, surrendered to the Germans some 13 days later.
1914
* Skirmish at Joncherey
* German capture of Neutral Moresnet
* Battle of Mons
* Battle of Le Cateau
* Battle of St. Quentin, also called the Battle of Guise
* First Battle of the Marne
* First Battle of the Aisne
* Siege of Antwerp
* First Battle of Albert
* First Battle of Arras
* Battle of Messines (1914)
* Battle of the Yser
* Battle of Armentières
* First Battle of Ypres
* First Battle of Champagne
1915
* Winter operations 1914–1915
* Battle of Neuve Chapelle
* Battle of Festubert
* Second Battle of Ypres
* Second Battle of Artois
* Battle of Loos
* Actions of the Hohenzollern Redoubt
* Second Battle of Champagne
1916
* Actions of the Bluff, 1916
* Battle of Verdun
* Hohenzollern Redoubt action, 2–18 March 1916
* Actions of St Eloi Craters
* Battle of Hulluch
* Battle of Mont Sorrel
* Raid on Hooge Chateau
* Battle of the Somme
** Battle of Albert (1916)
*** First day on the Somme
*** Battle of Thiepval Ridge
** Battle of the Ancre
* Battle of Fromelles
* Battle of Pozières
* Battle of Ginchy
1917
* Operations on the Ancre, January–March 1917
* Operation Alberich
* Nivelle Offensive
* Battle of Arras (1917)
* Battle of Vimy Ridge
* Second Battle of the Aisne, also called the Third Battle of Champagne
* Battle of Messines
* Third Battle of Ypres, also called the Battle of Passchendaele
* Battle of La Malmaison
* Battle of Cambrai (1917)
1918
* German spring offensive
** Operation Michael
*** Battle of St. Quentin, 21–23 March
*** Battle of Moreuil Wood
*** Battle of the Avre
** Battle of the Lys, also known as the Fourth Battle of Ypres and the Battle of Estaires
** Battle of Seicheprey
** Second Battle of Morlancourt
** Third Battle of the Aisne
** Belleau Wood Campaign
*** Battle of Cantigny
*** Battle of Belleau Wood
*** Battle of Château-Thierry
** Second Battle of the Marne
*** Battle of Soissons (1918)
*** Battle of Château-Thierry (1918)
* Hundred Days Offensive
** Battle of Amiens
** Second Battle of the Somme, also known as the Battle of St. Quentin
** Battle of Albert (1918)
** Battle of the Scarpe (1918)
** Battle of Havrincourt
** Battle of Saint-Mihiel
** Battle of Epéhy
** Battle of the Canal du Nord
** Fifth Battle of Ypres
** Battle of St Quentin Canal
** Battle of the Hindenburg Line
** Meuse-Argonne Offensive, also called the Battle of the Argonne Forest
*** Battle of Chesne
*** Advance to the Meuse
** Battle of Cambrai (1918)
** Battle of the Selle
** Battle of Valenciennes (1918)
** Battle of the Sambre (1918), also known as the Second Battle of the Sambre
** Second Battle of Mons
** Battle of Vrigne-Meuse [fr]

### Italian Campaign (1915–1918)

* Battles of the Isonzo
** First Battle of the Isonzo
** Second Battle of the Isonzo
** Third Battle of the Isonzo
** Fourth Battle of the Isonzo
** Fifth Battle of the Isonzo
** Sixth Battle of the Isonzo or the "Battle of Gorizia"
** Seventh Battle of the Isonzo
** Eighth Battle of the Isonzo
** Ninth Battle of the Isonzo
** Tenth Battle of the Isonzo
** Eleventh Battle of the Isonzo
** Twelfth Battle of the Isonzo or the "Battle of Caporetto"
* Trentino Offensive or the "Battle of Asiago"
* Battle of mount Ortigara
* Battle of the Piave River
* Battle of San Matteo
* Battle of Vittorio Veneto
* German/Bavarian occupation of South Tyrol and Northern Austria

### Eastern Front (1914–1918)

Campaign of 1914 (Entente victory; Russia captures Galicia, part East Prussia and part of the Carpathian Mountains, And also knocks out the Germans from Poland, disrupting their plans to destroy a group of Russian troops. As well as disrupts the Schlieffen plan, forcing Germany to fight on two fronts)
* East Prussian campaign (German victory)
** Battle of Stallupönen (Russian victory)
** Battle of Orlau (Russian victory)
** Battle of Kaushen (Russian victory)
** Battle of Gross-Bresau (Russian victory)
** Battle of Gumbinnen (Russian victory)
** Battle of Tannenberg (German victory)
* Battle of Galicia (Decisive Russian victory)
** Battle of Kraśnik (Austro-Hungarian victory)
** Battle of Komarów (1914) (Austro-Hungarian victory)
** Battle of Gnila Lipa (Russian victory)
** Battle of Rawa (Key Russian victory)
** Battle of Gorodek (1914) (Russian victory)
** Halich-Lviv offensive (Russian victory)
** Battle of Jaroslawice (Russian victory)
* Battle of Laski and Anielin (Russian victory)
* Battle of Mołotków (Russian victory)
* First Battle of the Masurian Lakes (German victory)
* Battle of Augustów (1914) (Russian victory)
* Second Russian invasion of East Prussia (1914) (Russian victory)
* Battle of the Vistula River (Decisive Russian victory)
* Battle of Łódź (1914) (Russian tactical victory; German strategic victory)
* Battle of the San river (Russian victory)
* Battle of Limanowa (Central powers victory)
* Battle of the Four Rivers (Russian victory)
* Battle of the Lupovsky Pass (Russian victory)
Campaign of 1915 (Central powers victory, however, the Germans are unable to bring Russia out of the war. Russians return a wide strip to Galicia)
* Battle of Pakoslaw (Russian victory)
* Battle of Carpathians (Russian victory)
** Siege of Przemysl (Russian victory)
** Kozevo offensive [ru] (Russian victory)
** Battle for Height 958 (Russian victory)
* Battle of Bolimov (Indecisive)
* First Battle of Przasnysz (Russian victory)
* Battle of Łomża (Partial Russian victory)
* Second Battle of the Masurian Lakes (German victory)
* Easter battle at Kalvarija (Indecisive)
* Second Battle of the Vistula River (Russian victory)
* Great Retreat (Russian) (German victory)
** Gorlice–Tarnów offensive (Central powers victory)
** Battle of Syniava (Russian victory)
** Vistula–Bug offensive (German victory)
** Bug–Narew Offensive (German victory)
** Skoropadsky's attack under Kraupishken (Russian victory)
** Second battle of Przasnysz (German Tactical victory, Russian strategic victory)
** Attack of the Dead Men (Russian victory)
** March on Grubeshov (Russian victory)
** Battle of Dniestr and Zolota Lypa (Partial Russian victory)
** Riga–Schaulen offensive (German victory)
** Siege of Kovno (German victory)
** Siege of Novogeorgievsk (German victory)
** Strypa offensive (Central powers major victory)
** Prut operation (Russian victory)
** Battle of Smorgon (Russian victory)
** Battle of Zurvno (Russian victory)
** Vilno-Dvinsk offensive (Key Russian victory)
* Sventiany Offensive (Indecisive)
Campaign of 1916 (Russian victory; recapture Galicia and Bukovina; the Russians are forcing the Germans to stop the attacks on Verdun by their actions)
* Lake Naroch Offensive (Tactical German victory; strategic Entente victory)
* Baranovichi offensive (Central powers victory)
* Brusilov Offensive (Russian victory)
** Battle of Lutsk (Russian victory)
** Battle of Kostiuchnówka (Russian victory)
** Battle of Kowel (Central powers victory)
Campaign of 1917 (Central powers victory)
* Christmas Battles (Russian victory)
* Kerensky Offensive (Central powers victory)
** Battle of Zborov (1917) (Entente victory)
** Battle of Borders (Russian victory; Central Powers retreat on Austria territory)
* Riga offensive (1917) (German victory)

### Central Powers intervention in the Russian Civil War (1918)

(Central Powers victory, End of the eastern front and Central Powers occupation of Western Russia)
* Finnish Civil War
** Battle of Kämärä (Red victory)
** Battle of Vilppula (White victory)
** Battle of Oulu (White victory)
** Battle of Ruovesi (Red victory)
** Battle of Tornio (1918) (White victory)
** Battle of Antrea (Red withdrawal)
** Invasion of Åland (1919 Ålandic status referendum)
** Battle of Varkaus (White victory)
** Battle of Rautu (White victory)
** Battle of Tampere (White victory)
** Battle of Länkipohja (White victory)
** Battle of Lempäälä (White victory)
** Battle of Ahvenkoski (White victory)
** Battle of Helsinki (Central powers and White victory)
** Battle of Hyvinkää (Central powers victory)
** Battle of Lahti (White victory)
** Battle of Hämeenlinna (White victory)
** Battle of Viipuri (White victory)
** Battle of Hauho [fi] (Red victory)
** Battle of Syrjäntaka (Red victory)
* Battle of Rarańcza (Polish victory)
* Operation Faustschlag (Decisive central powers victory; end of Eastern front)
** Battle of Pskov (1918)
* Battle of Bakhmach (Soviet victory)
* Crimea Operation (1918) (German-Ukrainian victory)
** Battle of Chongar Bridge [ru] (Ukrainian victory)
** Sivash breakthrough (Ukrainian victory)
** Battle of the Salt Lake (Ukrainian victory)
** Battle of Sevastopol (1918) (German-Ukrainian victory)
* Battle of Dibrivka (Insurgent victory)

### Romanian Campaign (1916–1918)

(part of Eastern front and Balkans theatre)
1916
* Romanian campaign (1916)
** Battle of Transylvania (Central Powers victory)
*** Northern front of the Battle of Transylvania
*** Battle of Sibiu (1916) (Central Powers victory)
*** Battle of the Olt Valley (Romanian victory)
*** Nagyszeben Offensive (Romanian victory)
*** Battle of Nagyszeben (1916)
*** Battle of Brassó (1916) (Central Powers victory)
*** First Battle of Petrozsény (Central Powers victory)
**** Battle of Vulcan Pass (Central Powers victory)
** Dobruja Campaign
*** Battle of Turtucaia (Central Powers victory)
*** Battle of Dobrich (Bulgarian victory)
*** First Battle of Cobadin (Romanian-Russian victory)
*** Second Battle of Cobadin (Central Powers victory)
** Operation for the Defense of the Carpathian Passes (1916) [ro]
*** Battle of Bran-Câmpulung Area [ro] (Romanian victory)
*** Battle of Prahova Valley [ro] (Romanian victory)
*** Battle of the Southern Carpathians (Romanian victory)
**** First Battle of Oituz (Romanian victory)
**** First Battle of the Jiu Valley (Romanian victory)
**** Battle of Dragoslavele (Romanian victory)
**** Battle of Târgu Jiu [ro] (Central Powers victory)
*** Battle of the Eastern Carpathians
** Flămânda Offensive (Central Powers victory)
** The Romanian Debacle (Central Powers victory)
*** Second Battle of the Jiu Valley (Central Powers victory)
*** Second Battle of Oituz (Romanian victory)
*** Battle of Slatina (Central Powers victory)
**** Battle of Robănești (Central Powers victory)
*** Battle of Bucharest (Central Powers victory)
**** Battle of Prunaru (de facto Romanian victory)
**** Battle of the Argeș (Central Powers victory)
*** Battle of Râmnicu Sărat [ro] (Central Powers victory)
1917
* Romanian Campaign (1917) (Russo-Romanian victory)
** Battle of Mărăști (Romanian-Russian victory)
** Battle of Mărășești (Romanian-Russian victory)
** Third Battle of Oituz (Romanian-Russian victory)
1918
* Battle of Galați (Romania victory, defeat of Russia)
* Second Romanian campaign of World War I

### Balkans theatre (1914–1918)
#### Serbia campaign (1914–1915)

* Battle of Cer
* Srem Offensive
* Battle of Drina
* Battle of Kolubara
* Battle of Morava
* Battle of Kosovo (1915)
* Battle of Ovche Pole
* Great Retreat (Serbia)
* Montenegrin campaign
** Battle of Mojkovac
* Liberation of Serbia, Albania and Montenegro (1918)

#### World War I in Albania (1914-1918)

* Liberation of Serbia, Albania and Montenegro (1918)

#### Partisan campaign in occupied Serbia (1915–1917/1918)

* Toplica Uprising (Central powers victory)

#### Macedonian front (1915–1918)

* Battle of Krivolak
* Battle of Kosturino
* 1st Battle of Doiran
* Battle of Florina
* Battle of Struma
* Monastir Offensive
** Battle of Malka Nidzhe
** Battle of Kajmakchalan
** 1st Battle of Cerna Bend
* 2nd Battle of Monastir
* 2nd Battle of Doiran
* 2nd Battle of Cerna Bend
* Battle of Skra-di-Legen
* Vardar Offensive
* Battle of Stepanci
** Battle of Dobro Pole
** 3rd Battle of Doiran
* Radomir Rebellion
* Liberation of Serbia, Albania and Montenegro (1918)

#### Greece during World War I

* National Schism (1914/1915–1917)
** Capitulation of Fort Roupel (1916)
** Italian and French occupation of Northern Epirus (1916)
** National Defence coup d'état (1916)
** Surrender and internment of IV Corps (1916)
** Noemvriana (1916)
** Battle of Katerini (? (1916 or 1917))
** French invasiont of Thessaly (1917)
* Struma operation (1916)

### Dissolution of Austria-Hungary (1914 - 1918)

* Banditry of the Green Cadres
* Cattaro mutiny
* Judenburg mutiny
* Rumburk rebellion
* Declaration of Czechoslovakia
** Attempt to declare Czechoslovakia in Dobruška
** Attempt to declare Czechoslovakia in Písek [cz]
** Czechoslovak coup in Prague [cz]
* Aster Revolution
* Poland takeover of Galicia
** Republic of Zakopane
** Liberation of Kraków [pl]
** First Republic of Pińczów
** Komańcza Republic
** Republic of Tarnobrzeg
* Banat Republic
* The Prešov Rebellion [sk]
* November Uprising (Lviv, 1918)
* Revolt in Međimurje
* Occupation of the eastern Adriatic
* Coup d'état in the Duchy of Bukovina on November 6, 1918 [ro]
* 1918 occupation of Međimurje

### German Revolution (1918) (WW1 part)

* Wilhelmshaven Mutiny
* Kiel mutiny
** Clashes at Kiel
** Takeover of Berlin
* People's State of Bavaria
* Mainz Workers' and Soldiers' Council
* Brussels Soldiers' Council
* Republic of Ostrów
* attempt to declare a republic in Luxembourg City
* attempt to declare a republic in Esch-sur-Alzette
* November 1918 insurgency in Alsace–Lorraine

## Middle Eastern theatre (1914–1919)
### Caucasus Campaign (1914–1918)

1914
* Capture of Bajazet (Russian victory)
* Bergmann Offensive (Ottoman victory)
* Battle of Sarikamish (Decisive Russian victory)
** Battle of Ardahan (Russian victory)
* Battle of Cape Sarych (Russian victory)
1915
* Defense of Van (1915) (Russo-Armenian victory)
* Battle of Manzikert (1915) (Ottoman victory)
* Battle of Kara Killisse (Russian victory)
* Battle of Dilman (Russian victory)
* Battle of Kirpen Island (Russian victory)
* Battle of the Bosporus (Russian victory)
1916
* Erzurum Offensive (Russian victory)
* Battle of Muş (Russian victory)
* Battle of Koprukoy (Russian victory)
* Trebizond Campaign (Russian victory)
** Lazistan offensive (Russian victory)
*** Landing in Riza (Russian victory)
* Battle of Çapakçur (Ottoman victory)
* Battle of Erzincan (Russian victory)
* Battle of Bitlis (Russian victory)
* Battle of Kop Mount (Russian victory)
1917
* Senenj-Kermanshah offensive (Russian victory)
1918
* Armenian–Azerbaijani war (1918–1920)
** Battle of Sardarabad (Decisive Armenian victory)
** Battle of Bash Abaran (Armenian victory)
** Battle of Karakilisa (Ottoman victory)
** Battle of Goychay (Ottoman-Azerbaijani victory)
** Battle of Kurdamir (Ottoman-Azerbaijani victory)
** Battle of Baku (Ottoman-Azerbaijani victory)
*** Battle of Binagadi (Ottoman-Azerbaijani victory)
* German Caucasus expedition (1918) (Ottoman-German withdrew)
* Battle of Choloki (1918) (Transcaucasian victory)
* Bicheharov offensive in Dagestan [ru] (White Russian victory)
** First siege of Petrovsk (Russian victory)
* Izzet Pasha's offensive in Dagestan (Ottoman victory)
* Dagestan Campaign (1918) (The Biceharists successfully counteract the Turks, but are forced to temporarily leave Dagestan; Ottoman output from Dagestan)
** Battle of Tarkin heights (Key Russian victory; Ottomans failure to capture Petrovsk)
** Battle of Mammadkali (Key Russian victory; The Biceharists maintain the unity of the Army, the Turks temporarily retreat)
** Second Siege of Petrovsk (Ottoman victory)

### Gallipoli Campaign (1915–1916)

The Gallipoli Campaign (also called the "Dardanelles Campaign"), was a number of battles fought between 1915 and 1916.
* Naval operations in the Dardanelles Campaign (Central Powers victory)
** Landing at Anzac Cove (Allied victory)
** Landing at Cape Helles (Central Powers victory)
* First Battle of Krithia (Central Powers victory)
* Second Battle of Krithia (Central Powers victory)
* Third Battle of Krithia (Central Powers victory)
* Battle of Gully Ravine (Allied victory)
* Battle of Sari Bair (Central Powers victory)
* Battle of Krithia Vineyard (Central Powers victory)
* Battle of Lone Pine (Allied victory)
* Battle of the Nek (Central powers victory)
* Battle of Chunuk Bair (Central powers victory)
* Battle of Hill 60 (Gallipoli) (Central powers victory)
* Battle of Scimitar Hill (Central powers victory)

### Sinai and Palestine Campaign (1915–1918)

* Senussi Campaign
* First Suez Offensive
* Battle of Romani or "The Second Suez Offensive"
* Battle of Bir el Abd
* Battle of Magdhaba
* Battle of Rafa
* Battle of Mughar Ridge
* Battle of Jerusalem
* Fall of Damascus
* First Battle of Gaza
* Second Battle of Gaza
* Battle of Beersheba
* Third Battle of Gaza
* Battle of Megiddo
* Battle of Nablus

### Mesopotamian Campaign (1914–1918)

* Fao Landing
* Fall of Basra
* Battle of Qurna
* Battle of Shaiba
* Capture of Amara
* 1915 uprising in Karbala
* Battle of Nasiriyah
* Battle of Es Sinn
* Battle of Ctesiphon
* Siege of Kut
** Battle of Sheikh Sa'ad
** Battle of the Wadi
** Battle of Hanna
** Battle of Dujaila Redoubt
** First Battle of Kut
* Battle of Khanaqin
* 1916 uprising in Hilla
* Second Battle of Kut
* Fall of Baghdad
* Samarra offensive
* Battle of Jebel Hamlin
* Battle of Istabulat
* Battle of Ramadi
* Capture of Tikrit
* Battle of Sharqat

### Arab Revolt (1916–1919)

* Battle of Mecca (1916) (Arab victory)
* Siege of Medina (1916–1919) (Hejaz victory but The Ottomans held out much longer than expected)

### Persian Campaign (1914–1918)

* Swedish intervention in Persia (1911–1916) (Indecisive, eventually a Persian-Swedish victory)
** Chiraz expedition (1913 –1915) (Persian-Swedish victory)
** Boroudjerd expedition
* Occupations of Tabriz (1914–1918)
** Russian occupation of Tabriz (1909–1915, 1915–1918)
** First ottoman occupation of Tabriz (1915)
** Second ottoman occupation of Tabriz (1918)
* Battle of Dilman (1915) (Allied victory)
* British occupations of Bushehr (1838, 1856, 1915) (Allied victory)
** Third british occupation of Bushehr (1915) (Allied victory)
* Jungle Movement of Gilan (1915-1920)
* Battle of Robat Karim (1915) (Allied tactical victory, Persian strategic victory)
* Battle of Musalla
* Battle of Qar-i Shirin
* Battle of Qom
* Kermanshah operation (1916) (Allied victory)
* Hakkari Expedition (1916) (Allied victory)
* Battle of Hamadan
* Battle of Seray Mountain (1917) (Allied victory)
* Hakkari Expedition (1917)
* Urmia revolt (1918) (Decisive Allied victory)
* Battle of Charah (1918) (Allied victory)
* Battle of Suldouze (1918) (Allied victory)
* Second battle of Urmia (1918)
* Third battle of Urmia (1918)
* Battle of Sauj Bulak
* Battle of Slamas the first
* Battle of Slamas the second
* Battle of Derbend

### South Arabia (1914–1919)

* Invasion of Cheikh Said
* Battle of Ad-Dakim
* Ahmad bin Yahya revolt

### Second Saudi-Rashidi War (1915–1918)

* Battle of Jarrab (1915)
* Revolt of Ajman tribe
** Battle of Kanzan (1915)
* British offensive to Jabal Shammar [ru] (1918)

### Other military engagements

* Armenian resistance during the Armenian genocide (result varies by location)
** Defense of Azakh also known as the Midyat Rebellion (Assyrian-Armenian victory)
*** Defence of Iwardo (Assyrian victory)
** Urfa resistance (Armenian victory)
** Musa Dagh defense (Armenian victory)
** Zeitun Resistance (1915) (Ottoman victory)
** Shabin-Karahisar uprising (Ottoman victory)
* British landing in Qatar [ru] (British victory)
* Emirate Ha'il raids againts Kuwait
* British attack on Ajmí as-Sadun in Anaza [ar] (Al-Muntafiq victory)

## African theatre of World War I (1914–1918)
### East African campaign (1914–1918) (Allied victory)

* Battle of Tanga or Battle of the Bees
* Battle of Rufiji Delta
* Battle of Kilimanjaro
* Battle of Namacurra
* Battle of Lioma

### Kamerun campaign (1914–1916) (Allied victory)

* Battle of Tepe (British victory)
* Siege of Mora (Allied victory)
* Battle of Nsanakong (German victory)

### Togoland campaign (1914)

* Battle of Chra (Allied victory)

### South West Africa campaign (1914–1915/1917)

* Battle of Sandfontein
* Maritz rebellion
** Battle of Mushroom Valley
* German campaign in Angola
** Naulila Incident
** Attack on Naulila
* Ovambo Uprising
* Battle of Kakamas
* South africa invasion to German South-West Africa
** Battle of Trekkopjes
** Battle of Otavi

### Operations in North africa (1914–1918 (as part of WW1)) (Allied victory)

* French conquest of Morocco (1914–1918 (as part of WW1)) (Co-belligerent conflict)
** Zaian War (1914-1921)
*** Khénifra campaign (1914)
*** Battle of El Herri (1914)
* Senussi Campaign (1915-1916)
** Senussi order Invasion of Tunisia
** Coastal campaign (1915–1916)
*** Action of Agagia (1916)
** Band of Oases campaign (1916–1917)

## Asia-Pacific theatre (1914–1919)

* Siege of Tsingtao (1914)
* Occupation of German Samoa (1914)
* Japan occupation of Shandong Peninsula(1914–?)

### Allied occupation of German New Guinea (1914)

* Battle of Bita Paka (1914)
* Siege of Toma (1914)
* Japanese occupation of German colonial possessions (1914)

### North-West Frontier Theatre (1914–1917)

* Operations in the Tochi (1914–1917)
* Operations against the Mohmands, Bunerwals and Swatis (1915)
* Kalat Operations (1915-16)
* Mohmand blockade (1916–1917)
* Operations against the Mahsuds (1917)
* Operations against the Marri and Khetran tribes (1918)

### Next

* Kelentan Rebellion (1915)

### Central Asian revolt of 1916

* Semirechye revolt of 1916 [ru]
** Karkarinsky uprising of 1916 [ru]
* Kostanay revolt [ru]
* Akmola revolt [ru]
* Turgai uprising (1916–1917) [ru]
** Siege of Turgai (1916)
** Dogal battle [ru]

### Basmachi movement (1916–1918(as part of WW1)-1934)

* Khivan Revolution
* Kolesov's Campaign

### Chinese entry into World War I (1917)

* Termination of the German and Austro-Hungarian Legations (China victory)
* Chinese occupation of Austro-Hungarian Tientsin (China victory)
* Chinese occupation of German Hankou (China victory)
* Chinese occupation of German Hankou (China victory)

## Naval engagements (1914–1918)
### U-boat campaign

* Atlantic U-boat campaign of World War I (1914–1918)
** Sinking of the RMS Lusitania (1915)
** Baralong incidents (1915)
*** Action of 19 August 1915
*** Action of 24 September 1915
** Attack on SS Gulflight (1916)
** United States Navy operations during World War I
*** Action of 15 October 1917
*** Attack on Orleans (1918)
* Mediterranean U-boat campaign of World War I
** Ancona incident (1915)
** United States Navy operations during World War I
*** Action of 8 May 1918

### Atlantic Theatre

* Blockade of Germany (1914–1919)
* Naval operations of the Kamerun campaign (1914)
** Battle of Ukoko (1914)
* First Battle of Heligoland Bight (1914)
* Sinking of the SMS Cap Trafalgar (1914)
* Battle of the Falkland Islands (1914)
* Raid on Scarborough, Hartlepool and Whitby (1914)
* Battle of Dogger Bank (1915)
* Battle of Jutland (1916)
* United States Navy operations during World War I (1917–1918)
* Battle of Dover Strait (1917) (British victory)
* Action of 4 May 1917
* Second Battle of Heligoland Bight (1917) (Indecisive)
* German shelling of Monrovia [ru] (1918) (indecisive)
* Zeebrugge Raid (1918)
* North Sea Mine Barrage (1918)

### Mediterranean

* Adriatic Campaign of World War I
** First bombardment of mount Lovćen
** Second bombardment of mount Lovćen
** Otranto Barrage (1915–1918)
** Action of 8 June 1915
** Battle of Durazzo (1915)
** Third bombardment of mount Lovćen (1916)
** Battle of the Otranto Straits (1917)
** Battle of Durazzo (1918)
** Raid on Pula (1918)
** Allied occupation of the eastern Adriatic (1918)
* Pursuit of Goeben and Breslau (1914)
* Naval operations in the Dardanelles Campaign (1915–1916)
** Landing at Anzac Cove (1915)
** Landing at Cape Helles (1915)
* Blockade of the Eastern Mediterranean (1915 – 1918)
* United States Navy operations during World War I (1917–1918)
** Second battle of Durazzo (1918)
* Battle of Imbros (1918)

### Asia-Pacific Theatre

* Battle of Rabaul
* Battle of Tsingtao (1914)
* Battle of Penang (1914)
* SMS Geier Incident (1914)
* Battle of Coronel (1914)
* Battle of Cocos (1914)
* Japanese Occupation Of German Pacific Colonial Possessions (1914)
* United States Navy operations during World War I (1917–1918)
** Scuttling of SMS Cormorana (1917)

### Baltic sea

* Battle of the Gulf of Riga (1915)
* Battle of Åland Islands (1915)
* Landing at Cape Domesnes (1915)
* Operation Albion (1917)
* Ice Cruise of the Baltic Fleet (1918)

### Black Sea

* Black Sea raid
* Battle of Cape Sarych
* Battle of the Bosporus
* Battle of Kirpen Island
* Action of 8 January 1916
* Airstrike on Zonguldak
* Romanian Black Sea Fleet during World War I

### West Indian Ocean

* Battle of Zanzibar (1914)
* Battle of Rufiji Delta (1914–1915)

### Naval engagements on rivers and lakes

* Bombardment of Belgrade (1914)
* Lake Victoria campaign
* First Battle of Cobadin
* Battle for Lake Tanganyika (1915–1916)

## Air engagements (1914–1918)

World War I was the first war to see major use of planes for offensive, defensive and reconnaissance operations, and both the Entente Powers and the Central Powers used planes extensively. Almost as soon as they were invented, planes were drafted for military service.
Battles:
* 1914 in aviation
** Raid on Cuxhaven (1914)
** Air combat of October 5, 1914 [Fr]
* Strategic bombing during World War I (1914–1918)
** German bombing of Paris during First World War
** German bombing of Britain (1914–1918)
*** Bombing of London during the First World War
**** Operation Turk's Cross (1916)
**** Harvest moon offensive (1917)
**** Arrival of the Giants (1917)
**** Fire plan (1917)
**** Whitsun Raid (1918)
*** Tipton Zeppelin raid (1916)
** Bombing of Warsaw during World War I [pl]
* 1915 in aviation
** Battle of Dogger Bank (1915) (one Zeppelin included)
** Action of 8 June 1915
** First victory using a synchronized gun (1915)
* 1916 in aviation
** Airstrike on Zonguldak (1916)
* 1917 in aviation
** Action of 4 May 1917
** Folkestone raid (1917)
** Battle of Arras (1917)
*** Bloody April (1917)
** Air Battle on Istrana (1917)
* 1918 in aviation
** Tondern raid (1918)
** Flight over Vienna (1918)
See also the following articles:
* Aviation history (1914–1918)
* Flying aces
* List of World War I flying aces
* Strategic bombing during World War I
* Zeppelins in World War I

## Other military engagements

* Mexican Border War (1910–1919)
** Battle of Ambos Nogales (1918)
* Battle of Broken Hill (1915)
* Allied occupation of Aegean Islands (1915-1918)
** Allied occupation of Imbros
** French capture of Kastellorizo
** Allied occupation of Tenedos
** British Occupation of Chios

## Co-belligerent conflicts

These conflicts are considered part of the First World War because one or more of the combatants were aligned with a main belligerent power which may have provided materiel, military, financial, or political support.

### Pre-First World War

* Mexican Revolution (1910–1920)
* Italo-Turkish War (1911–1912)
* First Balkan War (1912–13)
* Second Balkan War (1913)
* Muscat rebellion (1913–20)
* French conquest of Morocco (1907-1934)
** Zaian War (1914–21)
* Kurdish rebellions during World War I (1914–17)

### During the First World War

(Some are already mentioned above in the article)
* Maritz Rebellion (1914–15)
* United States occupation of Veracruz (1914)
** Ypiranga incident (1914)
* United States occupation of Haiti (1915-1934)
* Easter Rising (1916)
* Warlord Era (1916–1928)
** National Protection War (1915-1916)
** Manchu restoration (1917)
* Palace Coup against Lij Iyasu (1916–1921) (Zewditu victory)
** Battle of Segale (1916) (Zewditu victory)
* Russian Revolution (1917) (only parts related with World war I)
** February revolution (1917)
** July days (1917)
** October Revolution (1917)
** Russian Civil War (1917–22)
*** Ukrainian War of Independence (1917-1921)
**** Anti-Hetman Uprising
**** Soviet westward offensive of 1918–1919
*** Central Powers intervention in the Russian Civil War (1918-1920)
*** Allied intervention in the Russian Civil War (1918-1925)
**** North Russia Campaign (1918–1919)
* 1917 French Army mutinies
* Finnish Civil War (1918) (for battles see eastern front)
* Romanian military intervention in Bessarabia (1918)

### Post-First World War

* German revolution of 1918–1919 (post ww1 part)
* Russian Civil War (only parts related with World war I)
** Estonian War of Independence (1918-1920)
*** Soviet westward offensive of 1918–1919
** Latvian War of Independence (1918-1920)
*** Soviet westward offensive of 1918–1919
** Lithuanian Wars of Independence (1918-1920)
*** Soviet westward offensive of 1918–1919
*** Lithuanian–Bermontian War
* Czechoslovakian occupation of the Sudeteland [cz] (1918–1919)
* Greater Poland Uprising (1918–19)
* Hungarian-Romanian War (1918–19)
* Polish-Soviet War (1919–21)
* Latvian War of Independence (1918–20)
* Irish War of Independence (1919–21)
* Turkish War of Independence (1919–23)
* Greco-Turkish War (1919–22)
* Scuttling of the German fleet at Scapa Flow (1919)
* Vlora War (1920)
* Irish Civil War (1922–23)