First United States Army - Inter-War Years

Inter-War Years

As part of an army reorganization and final realization of the 1920 amendment to the National Defense Act of 1916, Army Chief of Staff, General Douglas MacArthur directed the establishment of four field armies that each commanded three corps areas that were geographically located. The field armies were established to provide organizational structure for large military organizations that might be mobilized in time of national need.

First Army was located in the northeast United States and was activated on 11 September 1933 at Fort Jay, Governors Island, New York. Initially activated as a paper army, it was commanded by General Dennis E. Nolan. Until 1942, First Army's commander was always the senior commander of one of its three corps areas. The First Corps Area was headquartered in Boston, Massachusetts, Second Corps Area was headquartered at Fort Jay, Governors Island in New York, New York and Third Corps Area was located at Fort Howard (Maryland) near Baltimore, Maryland. Since First Army was only a paper organization in its early days, its staff was the existing staff of the corps areas. The overall mission of the First Army was commanding and training regular army, army reserve and national guard units in the three corps areas.

Nolan, the American Expeditionary Force's (AEF) chief of intelligence during World War I was followed by Major General Fox Conner, First Corps Area commander and another AEF veteran and its Chief of Operations. In the years after World War I, Conner was a crucial mentor in the careers of Dwight Eisenhower and George C. Marshall. Passed over as a candidate for Army Chief of Staff for Douglas MacArthur, Conner retired.

In 1938, First Army came under command of General Hugh A. Drum. Drum who along with a build up of the Army in 1939 and through the early 1940s began to develop First Army into a bonafide field army. It began to establish and develop its own staff and participated in the large scale Army maneuvers in Louisiana and North Carolina between 1939 and 1941. As the United States entered World War II, Drum was assigned a new command of the newly established Eastern Defense Command, responsible for coastal and domestic defense. Drum retired in 1943 when he reached mandatory retirement age. General George Grunert, commander of Second Service Command assumed command of First Army until Headquarters, First Army was activated in Bristol England in January 1944 under command of General Omar Bradley.

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