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

full_context: Document 1: Army: An army (from Latin "arma" "arms, weapons" via Old French "armée", "armed" (feminine)) or ground force is a fighting force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps. Within a national military force, the word army may also mean a field army. They differ from army reserves who are activated only during such times as war or natural disasters.
Document 2: 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.
Document 3: List of Continental Army units: The Continental Army was the national army of first the Thirteen Colonies, and then the independent United States, during the American Revolutionary War, established by a resolution of the Congress on June 14, 1775, three days before the Battle of Bunker Hill, where it saw its first action under that title.. The Continental Congress took a number of steps in the spring of 1775 to create the army in response to the Battles of Lexington and Concord in April and the seizure of Fort Ticonderoga in May. The units composing the Continental Army changed frequently, especially in the first two years of the war. From 1777 to the close of the war, the organization of the Continental Army became progressively more systematic and sophisticated. The Continental Army that served at Yorktown in 1781 bore very little resemblance to the Continental Army that blockaded Boston in 1775.
Document 4: Charles W. Bagnal: Lieutenant General Charles Wilson Bagnal (April 15, 1934 – June 30, 2015) was a United States Army officer. He was commander of the United States Army Western Command (later United States Army Pacific), from 1985 to 1989. Previously he was Deputy Commanding General for Training of the United States Army Training and Doctrine Command (TRADOC), Deputy Superintendent at the United States Military Academy (from 1977 to 1980), Commander of the 101st Airborne Division (1981-1983), Commander of the Officer Personnel Management Directorate for the United States Army Military Personnel Center, and Special Assistant to the Deputy Chief of Staff for Personnel. He is an alumnus of the United States Military Academy, United States Army Command & General Staff College, Georgia Tech, the United States Army War College and McLenaghan High School in Florence, South Carolina (class of 1952). He retired August 31, 1989, and later obtained his juris doctor from the University of South Carolina and practiced law. He resided in Columbia with his wife Patsy. Bagnal died on June 30, 2015 after a battle with leukemia.
Document 5: West Point Band: The West Point Band (also known as the U.S. Military Academy Band or USMA Band) is the U.S. Army's oldest active band and the oldest unit at the United States Military Academy, traces its roots to the American Revolutionary War. At that time, fifers and drummers were stationed with companies of minutemen on Constitution Island, across the river from West Point. In 1778, General Samuel Holden Parsons' 1st Connecticut Brigade crossed the Hudson River and established West Point as a permanent military post. After the American Revolution, Congress disbanded most of the Continental Army, but “the 55 men at West Point,” members of the 2nd Continental Artillery, remained as they were. Among their ranks stood at least one drummer and one fifer, who alone maintained the tradition of military music at West Point.
Document 6: 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.
Document 7: David H. Huntoon: Lieutenant General David Holmes Huntoon, Jr., USA completed a 40-year military career serving as the Superintendent of the U.S. Military Academy at West Point, New York. He commanded West Point from July 15, 2010 until July 15, 2013, and retired from the Army on November 1, 2013. During his time in uniform, Huntoon served in infantry, planning, operations, training, strategy, and leader development positions, and commanded organizations from Platoon level to Army Major Command. Throughout his military career, Huntoon had alternating assignments between operational and leader development postings, and he gained a reputation as a highly skilled and innovative educator and a soldier-focused commander. He is the only Army general officer to have led the U.S. Army Command and General Staff College, the U.S. Army War College, and the U.S. Military Academy. Huntoon has unique experience in leader development in the U.S. military, and significantly influenced leader development programs in the U.S. Army as a general officer. As a Major, Huntoon wrote principal elements of the U.S. operational plan for the U.S. invasion of Panama (1989), and was a lead planner in the XVIII Airborne Corps plan for Operation Desert Storm (1990-1991).
Document 8: Robert W. Cone: Robert William Cone (March 19, 1957 – September 19, 2016) was a United States Army four-star general who last served as the commanding general of U.S. Army Training and Doctrine Command. He assumed command of TRADOC on 29 April 2011. He previously served as the commander of Fort Hood and III Corps on 22 September 2009 where he also deployed to Iraq in February 2010, and served as the Deputy Commanding General for Operations, United States Forces – Iraq, until February 2011. Prior to that, he served as the Special Assistant to the Commanding General of U.S. Army Training and Doctrine Command in Fort Monroe, VA. He retired in 2014.
Document 9: United States Armed Forces: The United States Armed Forces are the military forces of the United States of America. It consists of the Army, Marine Corps, Navy, Air Force, and Coast Guard. The President of the United States is the U.S. Armed Forces's overall head, and helps form military policy with the U.S. Department of Defense (DoD) and U.S. Department of Homeland Security (DHS), both federal executive departments, acting as the principal organs by which military policy is carried out. All five armed services are among the seven uniformed services of the United States.
Document 10: United States Army Training and Doctrine Command: Established 1 July 1973, the United States Army Training and Doctrine Command (TRADOC) is a command of the United States Army headquartered at Fort Eustis, Virginia. It is charged with overseeing training of Army forces and the development of operational doctrine. TRADOC operates 37 schools and centers at 27 different locations. TRADOC schools conduct 1,304 courses and 108 language courses. The 1,304 courses include 516,000 seats (resident, on-site and distributed learning) for 443,231 soldiers; 36,145 other-service personnel; 8,314 international soldiers; and 28,310 civilians.
Document 11: Kevin C. Kiley: Major General (Ret.) Kevin C. Kiley (born October 18, 1950) was the 41st Surgeon General of the United States Army and commander of the U.S. Army Medical Command, Fort Sam Houston, Texas. He was commander of Walter Reed Army Medical Center and North Atlantic Regional Medical Command twice, from 2002 to 2004, and as acting commander, March 1–2, 2007. He submitted his request to retire from the U.S. Army on March 11, 2007, in the wake of the Walter Reed Army Medical Center neglect scandal, and was removed from his nominative billet as a Lieutenant General. Pending retirement, he was assigned to a temporary billet at the General Officer Management Office at the Pentagon in the grade Major General. His retirement in the grade of Major General was subsequently approved.
Document 12: 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.
Document 13: Army of the Republic of Texas: The Army of the Republic of Texas was the land-based component of the armed forces for the Republic of Texas. It directly descended from the Texian Army, which was established on October 2, 1835, to fight for independence from Mexico in the Texas Revolution. The army was provisionally formed from the Consultation in November 1835, and officially established on September 5, 1836, from Article II, Section 5 of the Constitution of the Republic of Texas. After Texas' annexation by the United States, the Army of the Republic of Texas was merged into the United States Army. Today, the 141st Infantry Regiment trace their lineage back to the Texas Revolution.
Document 14: Indian Army: The Indian Army is the land-based branch and the largest component of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Army, and it is commanded by the Chief of Army Staff (COAS), who is a four-star general. Two officers have been conferred with the rank of field marshal, a five-star rank, which is a ceremonial position of great honour. The Indian Army originated from the armies of the East India Company, which eventually became the British Indian Army, and the armies of the princely states, which finally became the national army after independence. The units and regiments of the Indian Army have diverse histories and have participated in a number of battles and campaigns across the world, earning a large number of battle and theatre honours before and after Independence.
Document 15: David D. Halverson: LTG David D. Halverson assumed the duties of the commanding general of the U.S. Army Installation Management Command and Assistant Chief of Staff for Installation Management April 8, 2014. Previously, he served as deputy commanding general/chief of staff, U.S. Army Training and Doctrine Command TRADOC. Halverson assumed duties as the Deputy Commanding General/Chief of Staff, U.S. Army Training and Doctrine Command on 4 June 2012. Halverson's first duty assignment was in the 1st Cavalry Division, Fort Hood, Texas in 1979 where he served as a Battalion Reconnaissance Officer, Battery Fire Direction and Executive Officer and Battalion Adjutant. Since then, Halverson has served in various staff and leadership positions including command at every level from Battery to Post Command. His commands include A Battery, 6th Battalion, 29th Field Artillery, 8th Infantry Division; 2nd Battalion, 82nd Field Artillery, 1st Cavalry Division; 2nd Infantry Division Artillery, Operational Test Command, and Commanding General, Fires Center of Excellence and Fort Sill.
ground_truth: United States Army