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
Major general a variety of staff positions. The professional head of the Royal Marines currently holds the rank of major-general. From 1 April 1918 to 31 July 1919, the Royal Air Force maintained the rank of major-general. It was superseded by the rank of air vice-marshal on the following day. Major-general is equivalent to rear admiral in the Royal Navy and air vice-marshal in the Royal Air Force. In the United States Army, a major general (MG) typically commands a division of 10,000–20,000 soldiers and is capable of fully independent field operations. They may also serve as deputy commanders in 3-star commands