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First Army (United States)
First Army is the oldest and longest-established field army of the United States Army. It served as a theater army, having seen service in both World War I and World War II, and supplied the US army with soldiers and equipment during the Korean War and the Vietnam War under some of the most famous and distinguished officers of the U.S. Army. It now serves as a mobilization, readiness and training command.
Rock Island ArsenalThe Rock Island Arsenal comprises 946 acres (383 ha) located on Arsenal Island, originally known as Rock Island, on the Mississippi River between the cities of Davenport, Iowa, and Rock Island, Illinois. It is home to the United States Army First Army Headquarters, and the United States Army Center of Excellence for Additive Manufacturing. Historically, the indigenous Sauk people used Rock Island as their summer camp site.*As an Amazon Associate I earn from qualifying purchases.