The command was established on 20 August 1920 with headquarters at Fort Crook, Nebraska from elements of the previous Central Department. HQ, Seventh Corps Area moved to Fort Omaha, Nebraska, on 27 May 1922 and seven years later moved to the Army Building at 15th and Dodge Streets in Omaha - the Omaha Army Depot - on 25 March 1929.
Organization
The Seventh Corps Area was responsible for the mobilization, administration, and training of units of the:
Third and Sixth Armies, including the mobile formations and units in the corps area;
For the administration of units of the Organized Reserve, Seventh Corps Area was originally organized into three division areas and all divisional units, except cavalry, were administered by the headquarters of those three divisions. Cavalry units were administered by the 66th Cavalry Division, and nondivisional units were administered by the Corps Area headquarters. On 27 January 1923, the HQ, Non-Divisional Group was established at the Army Building in Omaha to administer corps-level and army-level units. But eight months later, HQ, Non-Division Group was discontinued, on 21 August 1925, and the Corps Area HQ took back responsibility for the remainder of the corps-level and army-level units. Two months later, the HQ, Artillery Group, was established 19 October 1925 at Sioux City, Iowa. The Artillery Group controlled only the corps- and army-level coast and field artillery units, while the Corps Area headquarters retained responsibility for the remainder of the corps- and army-level units. The Artillery Group was discontinued on 1 October 1937. On 2 November 1937, the Seventh Corps Area was divided into three “military areas,” and they assumed control of the artillery units within their zones of responsibility. The First Military Area assumed control of the 88th Division area, the Second Military Area assumed control of the 89th Division area, and the Third Military Area assumed control of the 102d Div. area. The Seventh Corps Area was assigning Reserve personnel to CASC units by December 1930 and to “1700” series numbered units on 2 August 1939. Headquarters Seventh Corps Area began functioning as a service command headquarters in October 1940, and was redesignated HQ, Seventh CASC in May 1941. It was further redesignated HQ, Seventh Service Command on 22 July 1942. Major posts and installations in the corps area included Fort Crook, Nebraska; Fort Des Moines, Iowa; Fort Leavenworth, Kansas, which was established in May 1827, and included the Sherman Field airfield; Fort Lincoln, North Dakota, in Bismarck, ND; Fort Meade, SD, two miles west of Sturgis, SD; Fort Omaha, NE; Fort Riley, Kansas, which included the Marshall Field airfield; Plattsmouth Rifle Range, NE, eight miles southeast of Fort Crook, and Fort Robinson, near Crawford, Nebraska.
Commanders
The officers who commanded the Seventh Corps Area during its existence included:
Maj. Gen. Omar Bundy 1 September 1920–11 February 1922
Maj. Gen. Francis J. Kernan 28 May 1922–15 September 1922
Maj. Gen. George B. Duncan 16 September 1922–10 October 1925
Maj. Gen. Benjamin A. Poore 15 October 1925–1 June 1927
Maj. Gen. Harry A. Smith 6 June 1927–21 May 1929
Brig. Gen. Edward L. King 21 May 1929–11 July 1929