Major general (United States) held by the commandant was raised to major general. It remained the highest rank in the Marine Corps until January 20, 1942, when the rank held by the commandant was raised to lieutenant general. Given that the U.S. Air Force evolved from its predecessors, the U.S. Army Air Service, the U.S. Army Air Corps and the U.S. Army Air Forces, the rank of major general in the Air Force coincides with its establishment as an independent service in 1947. Major general (United States) In the United States Army, United States Marine Corps, and United States Air Force, major general is
General of the Armies of the first presentations of the uniform to Army leadership, the Institute of Heraldry created an insignia chart with officer ranks ranging from Second lieutenant to General of the Armies of the United States. This 21st-century insignia chart, showing both a five- and six-star general officer, was considered unofficial by the Army and was later refined to show insignia only to four-star general. John J. Pershing was the only person in history to hold the rank of General of the Armies while serving on active duty. In 1919, to honor his service in World War I, Congress authorized the promotion