Original E.T.O. Advanced Base Patch

ADSEC was formally activated at Bristol, England in February 1944. Upon its creation, ADSEC was attached to the U.S. First Army, but from the outset was one of the ten geographic sections of the Communications Zone (Com-Z, ETO) logistics organization, and was the first Army logistical agency on the continent. ADSEC officially began operations on 6 June 1944 with the Normandy landings (D-Day).