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| | Guide to Federal Records - Records of United States Army Continental Commands, 1920-1942 |
 | | History: Nine corps areas established under the U.S. Army Chief of Staff by General Order 50, War Department, August 20, 1920, for administration, training, and tactical control of the army, replacing the six geographical (or territorial) military departments into which the continental United States had been divided since 1917. |
 | | Corps areas assigned to the Services of Supply, effective March 9, 1942, by Circular 59, War Department, March 2, 1942, implementing the reorganization of the army mandated by EO 9082, February 28, 1942. |
 | | Maps: Published maps compiled by the various corps areas, showing military activities, maneuver grounds, and plans of forts in each area, and including, for the VIII Corps Area, maps of Mexico and the Mexican border, 1922-42. |
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