The first volunteers were tradesmen that received advanced rank for their trade skills. This resulted in the Seabees being the highest-paid group in uniform. To recruit these men, age and physical standards were waived up to age 50. Until November 1942 the average Seabee was 37, even so, all received the same physical training. In December, FDR ordered the Selective Service System to provide CB recruits. Enlistees could request CB service with a written statement certifying that they were trade qualified. This lasted until October 1943 when voluntary enlistment in the Seabees ceased until December 1944. By war's end, 258,872 officers and enlisted had served in the Seabees. They never reached the Navy's authorized quota of 321,056.