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 the Army Personnel Office began attempting to resolve the confusion surrounding the status of General of the Armies. The Army Personnel Office determined that, because of the number of living five-star generals still on the Army rolls in 1964, to introduce a rank of General of the Armies would require a formal regulation dealing with seniority, insignia, and retirement benefits. The Army Judge Advocate General also advised that, should MacArthur receive promotion to rank of General of the Armies, salary and benefits associated with the much more firmly established rank of five-star General of the Army would have to be