Replacement training centers were opened in March 1941, about six months after the launching of Selective Service. For the remainder of 1941 the recently inducted civilian received his basic training at a replacement center. By April 1945, approximately 2,500,000 enlisted men had been graduated from replacement training agencies of the combat arm — infantry, cavalry, field artillery, coast artillery, antiaircraft, armored, and tank destroyer. [1]
Data from Report on the Army July 1, 1939 to June 30, 1943
List of Replacement Training Centers in the Spring of 1941 along with number of trainees attending.
 Camp Roberts, CA Infantry 15000 Whites Field Artillery 6000 Whites |
 Camp Callan, CA Coast Artillery 7600 Whites |
 Fort F.E. Warren, WY Quartermaster 5500 Whites 1500 Colored |
 Camp Wolters, TX Infantry 15000 Whites 2000 Colored |
 Fort Leonard Wood, MO Engineer 7500 Whites 3000 Colored |
 Camp Wallace, TX Coast Artillery 1000 Whites 500 Colored |
 Camp Wheeler, GA Infantry 15000 Whites 1500 Colored |
 Camp Croft, SC Infantry 15000 Whites 1500 Colored |
 Fort Bragg, NC Field Artillery 15000 Whites 1500 Colored |
 Aberdeen Proving Ground, MD Ordnance 4800 Whites 1000 Colored |
 Edgewood Arsenal, MD Chemical Warfare 800 Whites 200 Colored |
 Fort Eustis, VA Coast Artillery 14000 Whites 800 Colored |
 Fort Riley, KS Calvary 6500 Whites 500 Colored |
 Fort Sill, OK Field Artillery 7000 Whites 1000 Colored |
 Camp Grant, IL Medical 7000 Whites |
 Fort Knox, KY Armored 8405 Whites 515 Colored |
 Fort Monmouth, NJ Signal Corps 7500 Whites |
 Fort Belvoir,VA Engineer 7500 Whites 3000 Colored |
 Camp Lee , VA Medical 7000 Whites 300 Colored Quartermaster 9500 Whites 2300 Colored |
[1] http://www.history.army.mil/books/agf/AGF007/ch01.htm