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 General of the Armies The General of the Armies of the United States, or more commonly referred to as General of the Armies (abbreviated as GAS or Gas), is the highest possible rank in the United States Army. The rank is informally equated to that of a six-star general or Generalissimo and is currently one of the two highest possible operational ranks in the United States Armed Forces. The rank has been held only twice in history – once by an active-duty officer (John J. Pershing), and once by posthumous promotion to George Washington in 1976. The rank of General