Question: Randolph Bromery was a member of a group of airmen that formed which groups of the United States Army Air forces ?

full_context: Document 1: 91st Bombardment Group: The 91st Bomb Group (Heavy) was an air combat unit of the United States Army Air Forces during the Second World War. Classified as a heavy bombardment group, the 91st operated B-17 Flying Fortress aircraft and was known unofficially as "The Ragged Irregulars" or as "Wray's Ragged Irregulars", after the commander who took the group to England. During its service in World War II the unit consisted of the 322nd, 323rd, 324th, and 401st Bomb Squadrons. The 91st Bomb Group is most noted as the unit in which the bomber "Memphis Belle" flew, and for having suffered the greatest number of losses of any heavy bomb group in World War II.
Document 2: Randolph Bromery: Randolph W. ("Bill") Bromery (January 18, 1926 – February 26, 2013) was an African-American educator and geologist, and a former Chancellor of the University of Massachusetts Amherst (1971–79). While Chancellor, Bromery established the W.E.B. Du Bois Archives at the University of Massachusetts, and was one of the initiators of the Five College Consortium. He was also President of the Geological Society of America, and has made numerous contributions as a geologist and academic. During World War II, he was a member of the Tuskegee Airmen, flying missions in Italy.
Document 3: Kōkūtai: A Kōkūtai (航空隊 ) was, during World War II and in the Imperial Japanese Navy, a type of aerial combat unit, similar to the Air Groups in service in the other armies and navies of the time (called "Group" in the British Royal Air Force, "Gruppe" in the German Luftwaffe, "Groupe" in the French Armée de l'Air etc.). Although belonging to the Imperial Navy the Japanese Kōkūtai could be based at land or on board naval aircraft carriers and were constituted by hundreds of men and aircraft (that latters were distributed in smaller units called Hikōtai, the equivalent of squadrons). For example, the famous 343 Kōkūtai (a fighter group, divided in three Hikōtai) was based at land while the 652nd Kōkūtai (a bomber group) was carrier-based. As in general in the Imperial Japanese Navy Air Service, most pilots and aircrew members of a Kōkūtai were non-commissioned officers.
Document 4: Tuskegee University: Tuskegee University is a private, historically black university (HBCU) located in Tuskegee, Alabama, United States. It was established by Booker T. Washington. The campus is designated as the Tuskegee Institute National Historic Site by the National Park Service and is the only one in the U.S. to have this designation. The university was home to scientist George Washington Carver and to World War II's Tuskegee Airmen.
Document 5: W. E. B. Du Bois Institute: The W. E. B. Du Bois Institute for African and African-American Research is located at Harvard University and was established in 1969. It is named after W. E. B. Du Bois, who was the first African American to receive a Ph.D. from Harvard University (1895).
Document 6: Henry Cabot Lodge Bohler: Henry Cabot Lodge Bohler (June 8, 1925 – August 10, 2007) was a member of the prestigious Tuskegee Airmen during World War II who would later aid the advancement of civil rights for African-Americans living in the rural Southern United States.
Document 7: W. E. B. Du Bois: William Edward Burghardt "W. E. B." Du Bois ( ; February 23, 1868 – August 27, 1963) was an American sociologist, historian, civil rights activist, Pan-Africanist, author, writer and editor. Born in Great Barrington, Massachusetts, Du Bois grew up in a relatively tolerant and integrated community. After completing graduate work at the University of Berlin and Harvard, where he was the first African American to earn a doctorate, he became a professor of history, sociology and economics at Atlanta University. Du Bois was one of the co-founders of the National Association for the Advancement of Colored People (NAACP) in 1909.
Document 8: Hiram Mann: Hiram Mann (May 23, 1921 – May 17, 2014) was an American aviator, retired lieutenant colonel in the United States Air Force, and member of the Tuskegee Airmen's 332nd Fighter Group, an elite squadron of African-American airmen during World War II. Mann flew forty-eight missions over Europe as a member of the 332nd Fighter Group during the war. Mann was a member of the "Red Tails," as the Tuskegee Airmen were called at the time, so-called because the tails of the P-51D Mustangs flown by the African-American pilots in combat missions were painted crimson red. (The term "Tuskegee Airmen" did not come into use until the creation of a veteran's organization in 1972). Mann nicknamed his own fighter plane "The Iron Lady" after his wife.
Document 9: Tuskegee Airmen: is the popular name of a group of African-American military pilots (fighter and bomber) who fought in World War II. Officially, they formed the 332nd Fighter Group and the 477th Bombardment Group of the United States Army Air Forces. The name also applies to the navigators, bombardiers, mechanics, instructors, crew chiefs, nurses, cooks and other support personnel for the pilots.
Document 10: The Tuskegee Airmen: The Tuskegee Airmen is a 1995 HBO television movie based on the exploits of an actual groundbreaking unit, the first African American combat pilots in the United States Army Air Corps, that fought in World War II. The film was directed by Robert Markowitz and stars Laurence Fishburne, Cuba Gooding Jr., John Lithgow, and Malcolm-Jamal Warner.
Document 11: John Robinson (aviator): John Charles Robinson (November 26, 1903 – March 26, 1954) was an American aviator and activist who was hailed as the "Brown Condor" for his service in serving in the Imperial Ethiopian Air Force against Fascist Italy. Robinson pushed for equal opportunities for African-Americans during his early career, and was able to open his own eponymous aviation school in addition to initiating a program for black pilots at his college, the Tuskegee Institute. Robinson's achievements as an aviator were in stark contrast to the limited opportunities for most African-Americans in aviation careers, and were an important factor in reducing racially based prohibitions in the United States. Robinson is sometimes referred to as the "Father of the Tuskegee Airmen" for inspiring this all-black set of pilots who served during the United States' entry into World War II.
Document 12: Women's Flying Training Detachment: The Women's Flying Training Detachment was a group of women pilots during World War II. Their main job was to take over male pilot's jobs, such as ferrying planes from factories to United States Army Air Force installations, in order to free male pilots to fight overseas. They later merged with the Women Airforce Ferrying Squadron (formerly the Women's Auxiliary Ferrying Squadron) to form the Women Airforce Service Pilots.
Document 13: W. E. B. Du Bois: William Edward Burghardt "W. E. B." Du Bois ( ; February 23, 1868 – August 27, 1963) was an American sociologist, historian, civil rights activist, Pan-Africanist, author, writer and editor. Born in Great Barrington, Massachusetts, Du Bois grew up in a relatively tolerant and integrated community. After completing graduate work at the University of Berlin and Harvard, where he was the first African American to earn a doctorate, he became a professor of history, sociology and economics at Atlanta University. Du Bois was one of the co-founders of the National Association for the Advancement of Colored People (NAACP) in 1909.
Document 14: Women Airforce Service Pilots: The Women Airforce Service Pilots (WASP), called "Women's Army Service Pilots" by some sources, was a paramilitary aviation organization. The WASP's predecessors, the Women's Flying Training Detachment (WFTD) and the Women's Auxiliary Ferrying Squadron (WAFS) organized separately in September 1942. They were the pioneering organizations of civilian female pilots, employed to fly military aircraft under the direction of the United States Army Air Forces during World War II. The WFTD and WAFS were merged on August 5, 1943, to create the paramilitary WASP organization. The female pilots of the WASP ended up numbering 1,074, each freeing a male pilot for combat service and duties. They flew over 60 million miles in every type of military aircraft. The WASP was granted veteran status in 1977, and given the Congressional Gold Medal in 2009.
Document 15: United States Army Air Forces: The United States Army Air Forces (USAAF or AAF) was the military aviation service of the United States of America during and immediately after World War II, successor to the United States Army Air Corps and the direct predecessor of the United States Air Force. The AAF was a component of the United States Army, which in 1942 was divided functionally by executive order into three autonomous forces: the Army Ground Forces, the Services of Supply (which in 1943 became the Army Service Forces), and the Army Air Forces. Each of these forces had a commanding general who reported directly to the Army Chief of Staff.
ground_truth: the 332nd Fighter Group and the 477th Bombardment Group