 Expanded, reorganized, and redesignated 1 March 1943 as the Medical Detachments, 172d and 941st Field Artillery Battalions.Medical Detachment, 172d Field Artillery Battalion, inactivated 19 November 1945 at Camp Patrick Henry, Virginia; Medical Detachment, 941st Field Artillery Battalion, inactivated 23 November 1945 at Camp Myles Standish, Massachusetts.Medical Detachments, 172d and 941st Field Artillery Battalions, consolidated, reorganized, and federally recognized 10 November 1947 at Manchester as the Medical Detachment, 172d Field Artillery Battalion.