Question: The Commanding Army General during the United States Forces - Iraq was the 12th commander of what unit?

full_context: Document 1: United States Forces Japan: The United States Forces Japan (USFJ) (在日米軍 , "Zainichi Beigun" ) is an active subordinate unified command of the United States Pacific Command (USPACOM). It was activated at Fuchū Air Station, Tokyo, Japan on 1 July 1957 to replace the Far East Command (FEC). USFJ is commanded by the Commander, U.S. Forces, Japan (COMUSJAPAN). COMUSJAPAN is also the Commander, Fifth Air Force. At present, USFJ is headquartered at Yokota Air Base, Tokyo, Japan.
Document 2: Vincent K. Brooks: Vincent Keith Brooks (born October 24, 1958) is a United States Army general who is the current commander of United States Forces Korea, United Nations Command and ROK-U.S. Combined Forces Command. He previously served as commanding general of the United States Army Pacific and before that as the commanding general of Third Army. Brooks was the United States Army's Deputy Director of Operations during the War in Iraq, and frequently briefed the media, which raised his public profile. He also served as the Chief of Army Public Affairs The Pentagon. He later was commanding general of the 1st Infantry Division. General Brooks assumed his current assignment on April 30, 2016.
Document 3: Martin Dempsey: Martin Edward Dempsey (born March 14, 1952), sometimes known as Marty Dempsey, is a retired United States Army general who served as the 18th Chairman of the Joint Chiefs of Staff from October 1, 2011 until September 25, 2015. He previously served as the 37th Chief of Staff of the Army from April 11, 2011, to September 7, 2011. Prior to that, he served as Commanding General, U.S. Army Training and Doctrine Command, from December 8, 2008, to April 11, 2011, as Acting Commander, U.S. Central Command, from March 24, 2008, to October 30, 2008, as Deputy Commander, U.S. Central Command, from August 2007 to March 23, 2008, and as Commanding General, Multi-National Security Transition Command – Iraq (MNSTC-I), from August 2005 to August 2007. Dempsey assumed his assignment as Chairman of the Joint Chiefs of Staff on October 1, 2011 and stepped down from the Chairmanship on September 25, 2015. He now serves as a professor at Duke University.
Document 4: Dana J.H. Pittard: Dana J.H. Pittard is a retired United States Army officer. He was Deputy Commanding General of Operations (DCG-O) for ARCENT, the US Central Command / Third Army, based in Kuwait, until 2015. Pittard was appointed Joint Force Land Component Commander-Iraq, in response to the June 2014 incursions into Iraq from Syria by the Islamic State in Iraq and the Levant (Daesh), in the days post June 9, 2014. Pittard was the Commanding General of 1st Armored Division and Fort Bliss in El Paso, Texas. He was also Deputy Chief of Staff of Operations & Training at the Training and Doctrine Command (TRADOC) at Fort Monroe, Virginia and commanding general of the National Training Center, Fort Irwin, California.
Document 5: Peter Schoomaker: Peter Jan Schoomaker (born February 12, 1946) is a retired four-star general of the United States Army and served as the 35th Chief of Staff of the United States Army from August 1, 2003 to April 10, 2007. Schoomaker's appointment as Chief of Staff was unique in that he was recalled and came out from retirement to assume the position. Schoomaker voluntarily retired from the Army for the second time in 2007 after completing the full four-year term as Chief of Staff.
Document 6: Stephen J. Townsend: Stephen J. Townsend is a United States Army officer who currently commands Combined Joint Task Force – Operation Inherent Resolve and the XVIII Airborne Corps. Townsend served with the 82nd Airborne Division, the 7th Infantry Division, the 75th Ranger Regiment, the 78th Infantry Division, and the 10th Mountain Division. He fought in Operation Urgent Fury, Operation Just Cause, and Operation Uphold Democracy. With the 10th Mountain Division, he served in the War in Afghanistan, leading a task force in Operation Anaconda. Townsend became commander of the 3rd Stryker Brigade Combat Team, leading it in the Battle of Baqubah in the Iraq War. Townsend became commander of the 10th Mountain Division in the War in Afghanistan. In May 2015 he became commander of XVIII Airborne Corps, and in late August 2016 took command of the Combined Joint Task Force – Operation Inherent Resolve.
Document 7: Joseph Dunford: Joseph Francis Dunford Jr. (born December 8, 1955) is a United States Marine Corps General. He is the 19th Chairman of the Joint Chiefs of Staff. He was also the 36th Commandant of the Marine Corps. Dunford is the first Marine Corps officer to serve in four different four-star positions; the others include commander of the International Security Assistance Force and United States Forces-Afghanistan from February 2013 until August 2014, and as the 32nd Assistant Commandant of the Marine Corps from October 23, 2010, to December 15, 2012. He has also commanded several units, including the 5th Marine Regiment during the 2003 invasion of Iraq. As Chairman, Dunford is the highest-ranking military officer in the United States Armed Forces.
Document 8: Lloyd Austin: Lloyd James Austin III (born August 8, 1953) is a retired United States Army general. He was the 12th commander of United States Central Command (CENTCOM). Austin was the first African American to head the organization. Prior to his assignment in CENTCOM, Austin served as the 33rd Vice Chief of Staff of the United States Army from January 31, 2012, to March 8, 2013. His assignments prior to CENTCOM were as the last Commanding General of United States Forces - Iraq, Operation New Dawn, which ended on December 18, 2011, and then Vice Chief of Staff of the United States Army. On December 6, 2012, the Pentagon announced that President Barack Obama had nominated Austin to lead the U.S. Central Command. Austin was confirmed by the U.S. Senate on March 5, 2013, and assumed command on March 22, 2013. On April 5, 2016, Austin's retirement ceremony took place at Joint Base Myer–Henderson Hall. He received the Defense Distinguished Service Medal, the Army Distinguished Service Medal, the Defense Superior Service Medal, the Legion of Merit, and others.
Document 9: Colin Powell: Colin Luther Powell ( ; born April 5, 1937) is an American statesman and a retired four-star general in the United States Army. Powell was born in Harlem as the son of Jamaican immigrants. During his military career, Powell also served as National Security Advisor (1987–1989), as Commander of the U.S. Army Forces Command (1989) and as Chairman of the Joint Chiefs of Staff (1989–1993), holding the latter position during the Persian Gulf War. Powell was the first, and so far the only, African American to serve on the Joint Chiefs of Staff. He was the 65th United States Secretary of State, serving under U.S. President George W. Bush from 2001 to 2005, the first African American to serve in that position.
Document 10: Austin S. Miller: Austin S. Miller is a senior officer, Lieutenant General, in the United States Army and current commander of the Joint Special Operations Command. He has participated in numerous combat operations, such as; Battle of Mogadishu 1993, and since 2001 the wars in Iraq and Afghanistan.
Document 11: Viet Xuan Luong: Viet Xuan Luong (Vietnamese: "Lương Xuân Việt") is a United States Army Brigadier General. He is the first American officer promoted to flag rank who was born in Vietnam. He is currently the Deputy Commanding General (Operations), Eighth Army. He previously served as chief of staff of United States Army Central. His prior assignments included Director of Joint and Integration, Headquarters Department of the Army, G-8; assistant division commander–maneuver for the 1st Cavalry Division at Fort Hood, concurrent with assignment as commander, Train Advise Assist Command – South, Resolute Support Mission Joint Command, North Atlantic Treaty Organization, Afghanistan.
Document 12: United States Forces – Iraq: United States Forces – Iraq (USF-I) was an American military sub-unified command, part of U.S. Central Command. It was stationed in Iraq as agreed with the Government of Iraq under the U.S.–Iraq Status of Forces Agreement. USF–I replaced the previous commands Multi-National Force – Iraq, Multi-National Corps – Iraq, and Multi-National Security Transition Command – Iraq from January 2010. General Lloyd Austin served as Commanding General. The logo of the USF-I depicts a lamassu.
Document 13: Raymond T. Odierno: Raymond Thomas "Ray" Odierno ( ; born 8 September 1954) is a retired United States Army General who served as the 38th Chief of Staff of the Army. Prior to his service as Chief of Staff, Odierno commanded United States Joint Forces Command from October 2010 until its disestablishment in August 2011. He served as Commanding General, United States Forces – Iraq and its predecessor, Multi-National Force – Iraq, from September 2008 through September 2010. Before then, he served as Commanding General, III Corps, from May 2006 to May 2008. Odierno is the twelfth American military officer to command at the Division, Corps, and Army level during the same conflict and only the second with this distinction since the Vietnam War. Before commanding III Corps, he served as Assistant to the Chairman of the Joint Chiefs of Staff in Washington, where he was the primary military adviser to Secretary of State Condoleezza Rice from 3 November 2004 to 1 May 2006.
Document 14: James F. Amos: James F. "Jim" Amos (born November 12, 1946) is a retired United States Marine Corps four-star general who served as the 35th Commandant of the Marine Corps. As a Naval Aviator, Amos commanded the 3rd Marine Aircraft Wing during the Iraq War in 2003 and 2004. He served as the 31st Assistant Commandant of the Marine Corps. He is the first Marine Corps aviator to serve as commandant.
Document 15: James L. Terry: James L. Terry is a Lieutenant General (Ret) in the United States Army. He was born in Chatsworth, Georgia on May 14, 1957. In 1978, he graduated from North Georgia College and through ROTC, commissioned into the Infantry. Terry has commanded at multiple levels across the Army. Terry's last assignment was as the commanding general of United States Army Central, retiring 17 November 2015. Terry served as the last commander of V Corps before its inactivation in 2013. While commanding V Corps, he concurrently served as Commander, International Security Assistance Force Joint Command (IJC), and as deputy commander of United States Forces Afghanistan. He was the Commanding General of the 10th Mountain Division (Light Infantry) from 2009 to 2011.
ground_truth: United States Central Command