"Combat readiness was the concern of President Theodore Roosevelt when he initiated an early version of the Army Physical Fitness Test for officers, known as the Annual Test Ride. He had observed "field officers who were physically unable to ride even a few miles at an increased gait," and he announced that it was "essential that field officers of the line of the Army should be at all times physically fit and able to perform the duties pertaining to their positions" (U.S. War Department, 1907a). The President's solution was explicit: he told the Secretary of War that as I believe that such physical fitness can only be demonstrated by actual physical tests, I desire that you give the necessary directions ..., and he outlined mandatory tests, such as "cavalry marches of not less than 30 miles per day for three days in succession, under conditions suitable to the making of forced marches in active field operations" (U.S. War Department, 1907b). He also wanted the names reported for any officers who fell out of these marches and directed that "appropriate action be taken in the cases of all officers found not qualified physically for active service.""
Theodore Roosevelt

January 1, 1970