 By late 1942, the Selective Service System moved away from a national lottery to administrative selection by its more than 6,000 local boards.On December 5, 1942, presidential Executive Order 9279 made it so that all men from the ages of 18 to 37 could not voluntarily enlist for the duration of the war, providing protection for the nation's home front manpower pool.The Navy and Marine Corps began procuring their personnel through the Selective Service System in early 1943.