Question: Kevin W. Mangum is a lieutenant general for which branch of the United States Armed Forces?

Context paragraphs:
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.

Kevin W. Mangum: Kevin Wayne Mangum (born October 6, 1960) is a United States Army lieutenant general who serves as deputy commander and chief of staff, United States Army Training and Doctrine Command (TRADOC).  He is a 1982 graduate of the United States Military Academy.  He previously commanded the United States Army Aviation Center of Excellence.

United States Armed Forces Chess: United States Armed Forces Chess refers to the annual Armed Forces Chess Championship held annually since 1960 by the United States Department of Defense and the United States Chess Federation.  It also refers to the study of the game of chess by the United States Armed Forces for military applications.

Hun Manet: Hun Manet (Khmer: ហ៊ុន ម៉ាណែត ; born 20 October 1977) is a lieutenant general in the Royal Cambodian Armed Forces (RCAF).  He is the son of Cambodian Prime Minister Hun Sen.  His birth parents are Bun Rany and Hun Sen.  He grew up and received his General Education in Phnom Penh and later joined the Royal Cambodian Armed Forces in 1995, the same year he entered the prestigious United States Military Academy at West Point.  Having received his diploma on May 29, 1999.  Hun Manet became the first Cambodian graduate of the Academy.  Upon graduation from West Point, he received his bachelor's degree in Economics and a commission as Lieutenant in the Royal Cambodian Army.  He also received his Master of Arts in Economics from New York University in 2002, and a PhD in Economics from University of Bristol, United Kingdom, in 2008.  On 23 May 1999 he became the first Cambodian to graduate from the United States Military Academy.

Mubarak Abdullah Al-Jaber Al-Sabah: Sheikh Mubarak Abdullah Al-Jaber Al-Sabah (1934–1987) (Arabic: الشيخ مبارك عبد الله الجابر الصباح ‎ ‎ ) was a member of the House of Sabah and one of the first Kuwaitis to attain the military rank of lieutenant general.  He was one of the first Kuwaitis to be commissioned as an officer by the Royal Military Academy Sandhurst, UK, and the first Kuwaiti to receive an Amiri Decree for appointment as Chief of the General Staff (in March 1963, before the age of 30).  Mubarak initiated joint training of Kuwait Armed Forces and United States Armed Forces in 1977 and, the following year, was the first military officer to establish conscription.

United States Air Force: The United States Air Force (USAF) is the aerial and space warfare service branch of the United States Armed Forces and one of the seven American uniformed services.  Initially part of the United States Army, the USAF was formed as a separate branch of the U.S. Armed Forces on 18 September 1947 under the National Security Act of 1947.  It is the most recent branch of the U.S. Armed Forces to be formed.  The USAF is the largest and one of the most technologically advanced air forces in the world.  The service articulates its core functions as Nuclear Deterrence Operations, Air Superiority, Space Superiority, Cyberspace Superiority, Command and Control, Global Integrated ISR, Global Precision Attack, Special Operations, Rapid Global Mobility, Personnel Recovery, Agile Combat Support, and Building Partnerships.

Ibrahim El-Orabi: Ibrahim Abdel Ghafour El Orabi (Arabic: إبراهيم عبد الغفور العرابي‎ ‎ , ] ) (born 20 May 1931) was an Egyptian Army Lieutenant General and the 13th and former Chief of Staff of the Egyptian Armed Forces.  He was a member of the Free Officers Movement as defined by the Egyptian revolution of 1952, which led to King Farouk abdicated to his son King Ahmed Fouad II, until announced the establishment of the Republic in 1953.  He began his military career at the end of the forties and witnessed all Arab-Israeli wars and all the political volatility that passed by Egypt since the 1948 Arab–Israeli War to the Yom Kippur War where he was one of its heroes.  He previously served as the 7th Chief of Operations of the Armed Forces.  Prior to that, he served as Commander of the Second Field Army, as Commander of the 21st Armored Division, as Commander of the Arab Forces in Iraq, and as Commander of the Armored Corps in Yemen war.  As the Chief of Staff of the Egyptian Armed Forces, Orabi was formerly the second highest-ranking military officer in all of the Egyptian Armed Forces.  Orabi assumed his former assignment on 16 July 1983.  Best known for severe discipline and rigor.

U.S.–Japan Status of Forces Agreement: U.S.–Japan Status of Forces Agreement (formally, the "Agreement under Article VI of the Treaty of Mutual Cooperation and Security between Japan and the United States of America, Regarding Facilities and Areas and the Status of United States Armed Forces in Japan") is an agreement between Japan and the United States signed on 19 January 1960 in Washington, the same day as the revised U.S.-Japan Security Treaty.  It is a status of forces agreement (SOFA) as stipulated in article VI of that treaty, which referred to "a separate agreement" governing the "use of [...] facilities and areas [granted to the U.S.] as well as the status of United States armed forces in Japan".  It replaced the earlier "U.S.-Japan Administrative Agreement" that governed such issues under the original 1951 security treaty.

United States Army: The United States Army (USA) is the largest branch of the United States Armed Forces and performs land-based military operations.  It is one of the seven uniformed services of the United States and is designated as the Army of the United States in the United States Constitution, Article 2, Section 2, Clause 1 and United States Code, Title 10, Subtitle B, Chapter 301, Section 3001.  As the oldest and most senior branch of the U.S. military in order of precedence, the modern U.S. Army has its roots in the Continental Army, which was formed (14 June 1775) to fight the American Revolutionary War (1775–1783)—before the United States of America was established as a country.  After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784 to replace the disbanded Continental Army.  The United States Army considers itself descended from the Continental Army, and dates its institutional inception from the origin of that armed force in 1775.

Arnold Quainoo: Lieutenant General Arnold Quainoo is a retired Ghanaian military officer and served as the Chief of Defence Staff of the Ghana Armed Forces from August 1983 to September 1989.  He took over from Flight Lieutenant J. J. Rawlings and handed over to Lieutenant General Winston Mensa-Wood.  He was also the first commander of the Economic Community of West African States Monitoring Group (ECOMOG) which intervened in Liberia to help end the civil war.  He also served twice as Army Commander, first in 1979 following the coup-d'état by the Armed Forces Revolutionary Council which overthrew the Supreme Military Council.  He was replaced when the Limann government was elected.  He was however re-appointed as Chief of Army Staff following the coup by the Provisional National Defence Council and later as General Officer Commanding the Ghana Armed Forces.

Supporting paragraphs: Kevin W. Mangum United States Army
Answer: United States Army