The 17th Signal Battalion was activated in the Army of the United States on 30 November 1942 at Camp Crowder, Missouri. From its activation until 20 October 1943, the battalion participated in the Second Army maneuvers. On 1 November 1943, the battalion was assigned to Headquarters, U.S. First Army, stationed in Patchway, England where its primary mission was to provide communications for First Army Headquarters. The battalion was then deployed and participated in the World War II campaigns of Normandy, Northern France, Rhineland, Ardennes-Alsace, and Central Europe.