General-in-chief military forces in the field, as the generals-in-chief did in the 19th century. The rank of "General of the Armies of the United States" was conferred upon General John J. Pershing in 1919 and to Lieutenant General George Washington (posthumously) in 1975 by acts of Congress. Washington's date of rank was retroactively dated to 1799, so that he will always be the senior ranking general of the United States Army. (American general ranks and titles may be a little confusing; however, as reference is cited the public domain information of the Center for Military History of the United States Army
Major general French Army, Major General (in full "Major General of the Army", "Major général de l'armée de terre") is a position and the major general is normally of the rank of corps general. Historically, the French army had some "sergent-majors généraux", also called "sergents de bataille", whose task was to prepare the disposition of the army on the field before a battle. These "sergents-majors généraux" became a new rank, the "maréchal de camp" (not the same as a field marshal, in the French Army from antiquity called a "Maréchal de France"), which was the equivalent of the rank of major general.