Actually, the two attended different military academies, George Marshall attended the Virginia Military Institute, while MacArthur attended the famous West Point.
But when they both later came to Fort Leavenworth's Cavalry School, they had already started to butt heads.
However, at this time, it was at most a rivalry between students vying for dominance.
It wasn't until after the Sedan incident that their relationship completely went south!
Because of MacArthur's father's prestige in the military, even after the Sedan incident, MacArthur remained held aloft in the Military Department.
In contrast, Marshall, whose father had also served in World War I, didn't leave him any valuable connections.
So by 1932, through MacArthur's maneuvers, Marshall was directly transferred out of the regular troops and became the commander of the Illinois National Guard.
