Question: Which country issued a revolver that used .455 Webley cartridges to their armed forces between 1887 until 1963?

Context paragraphs:
Webley Revolver: The Webley Revolver (also known as the Webley Top-Break Revolver or Webley Self-Extracting Revolver ) was, in various marks, a standard issue service pistol for the armed forces of the United Kingdom, and the British Empire and Commonwealth, from 1887 until 1963.

Chief warrant officer: Chief Warrant Officer is a military rank used by the United States Armed Forces, the Canadian Armed Forces, the Pakistan Air Force, the Israel Defense Forces, the South African National Defence Force, the Lebanese Armed Forces and, since 2012, the Singapore Armed Forces.  In the United States Armed Forces Chief Warrant Officers are actual officers, not NCOs like other NATO forces.

EUTM Mali: EUTM Mali(European Union Training Mission in Mali) is a European Union multinational military training mission headquartered in Bamako, Mali, which is training and advising the military of Mali.  EUTM Mali will not be involved in combat operations in the north of the country and does not have an executive mandate.  22 European nations (Austria, Belgium, Bulgaria, Czech Republic, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Netherlands, Portugal, Romania, Slovenia, Slovakia, Spain, Sweden, United Kingdom, Greece) and 5 European countries (not members of the EU: Georgia, Montenegro, Serbia, Moldavia and Albania) are engaged in this mission and have sent soldiers to the Republic of Mali.  EUTM Mali is one of the elements of a global approach organized by the EU in Mali defined within the Strategy for the security and development within the region of Sahel."  EUTM Mali respond to the operational needs of the Malian Armed Forces through the provision of: training support for the benefit of the Malian Armed Forces,training and advice on command and control, logistical chain and human resources, as well as training on International Humanitarian Law, protection of civilians and human rights,a contribution, upon Malian request and in coordination with MINUSMA, to the Disarmament, Demobilisation and Reintegration process framed by the Peace Agreement, through the provision of training sessions in order to facilitate the reconstruction of inclusive Malian Armed Forces,support to the G5 Sahel process, within the activities of EUTM Mali in support of the Malian Armed Forces, by contributing to enhancing coordination and interoperability within the G5 Sahel national armed forces.

Ministry of Defence (Somalia): The Ministry of Defence (Somali: "Wasaaradda Gaashaandhigga" ) is charged with co-ordinating and supervising all agencies and functions of the government relating directly to national security and the Somali Armed Forces.  The President of Somalia is the Supreme Commander of the Armed Forces of the country.  The Ministry of Defence provides policy framework and resources to the Armed Forces to discharge their responsibility in the context of the defence of the country.  The Armed Forces (including Somali Army, Somali Air Force, and Somali Navy) under the Defence Ministry are primarily responsible for ensuring the territorial integrity of the nation.  The current Minister of Defence of Somalia is Abdirashid Abdullahi Mohamed.

Sudanese Armed Forces: The Sudanese Armed Forces (SAF) are the Armed Forces of the Republic of Sudan.  According to 2011 IISS estimates, it numbers 109,300 personnel.  They comprises Land Forces, the Sudanese Navy, the Sudanese Air Force, and the Popular Defence Forces.  They also previously had Joint Integrated Units formed together with its rebel enemies the Sudan People's Liberation Army.  The Armed Forces operate under the authority of the People's Armed Forces Act 1986.  In 1991, the Library of Congress used the term "Sudan People's Armed Forces" to refer to the entire armed forces, but by the late 2000s (decade), the "Sudanese Armed Forces" term was most widespread.  In 2004, the Federal Research Division of the Library of Congress estimated that the Popular Defence Forces, the military wing of the National Islamic Front, consists of 10,000 active members, with 85,000 reserves.  It has been deployed alongside regular army units against various rebel groups.

.455 Webley: .455 Webley is a British handgun cartridge, most commonly used in the Webley top break revolvers Marks I through VI.  It is also known as .455 Eley and .455 Colt.

Hungarian Defence Force: Hungarian Defence Forces (Hungarian: "Magyar Honvédség" ) is the national defence force of Hungary.  The President holds the title of commander-in-chief of the nation's armed forces.  The Ministry of Defence jointly with Chief of staff administers the armed forces, including the Hungarian Ground Force and the Hungarian Air Force.  Since 2007, the Hungarian Armed Forces is under a unified command structure.  The Ministry of Defence maintains the political and civil control over the army.  A subordinate Joint Forces Command is coordinating and commanding the HDF corps.  In 2016, the armed forces had 31.080 personnel on active duty, the operative reserve brought the total number of troops to fifty thousand.  In 2017, military spending will be $1.21 billion, about 0.94% of the country's GDP, well below the NATO target of 2%.  In 2012, the government adopted a resolution in which it pledged to increase defence spending to 1.4% of GDP by 2022.

Armed Forces Day (Poland): Armed Forces Day, known also as the Feast of the Polish Armed Forces (Polish: "Święto Wojska Polskiego" ), is a national holiday celebrated annually on 15 August in Poland, commemorating the anniversary of the 1920 victory over Soviet Russia at the Battle of Warsaw during the Polish–Soviet War.  Armed Forces Day is held in conjunction with the Day of the Assumption of the Virgin Mary, itself a separate public holiday.  The event is marked by military parades, equipment reviews, showcases and remembrances by all branches of the Polish Armed Forces across the country.  One of the most prominent events of the day is in the capital Warsaw, which hosts a large military parade through the city's center.  Originally celebrated during the Second Republic, the holiday was barred by authorities during the communist era beginning in 1947, only to be revived again in 1992.

.476 Enfield: The .476 Enfield, also known as the .476 Eley, .476 Revolver, and occasionally .455/476, was a British centrefire black powder revolver cartridge.  The Enfield name derives from the location of the Royal Small Arms Factory at Enfield Lock, the armoury where British Military Small Arms were produced, while Eley was a British commercial brand.Used in the Enfield Mk II revolver, the Mk III variant was introduced by the British Army in 1881, supplanting the earlier .476 Enfield Mark I and II cartridges, which in turn had replaced the .450 Adams cartridges, all of which also used black powder propellant.

Republic of Sierra Leone Armed Forces: The Republic of Sierra Leone Armed Forces (RSLAF) is the armed forces of Sierra Leone, responsible for the territorial security of Sierra Leone's border and defending the national interests of Sierra Leone, within the framework of its international obligations.  The armed forces were formed after independence in 1961, on the basis of elements of the former British Royal West African Frontier Force, then present in the country.  The Sierra Leone Armed Forces currently consist of around 13,000 personnel.

Supporting paragraphs: .455 Webley Webley Revolver
Answer: United Kingdom