ADSEC

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Advanced Section
Communications Zone
European Theater of Operations, U.S. Army
ADSEC shoulder patch.jpg
Advanced Section, Communication Zone (ETO). The meaning of the patch is the lightning bolt represents the Allies breaking the chains of Nazi oppression. The patch is similar to the ETOUSA patch with the addition of the blue 5 pointed star in the white six lobed field. This blue star in white field is the emblem of the Services of Supply organization.
Active 1944 to 1945
Country United States of America
Allegiance United States of America
Branch Army
Role Services of Supply
Part of European Theater of Operations, U.S. Army (ETOUSA)
Commanders
Notable
commanders
Brigadier General Ewart G. Plank

ADSEC or ADSEC/COMZ represents "The Advance Section, Communications Zone", European Theater of Operations, United States Army (ETOUSA), which was formally activated at Bristol in February 1944. It is commonly referred to as simply "ADSEC". This was a U.S. Army logistical agency, the first on the Continent. Upon its creation ADSEC was attached to the U.S. First Army, and gradually took over the Communications Zone activities. The agency moved forward with the Armies and provided close support. ADSEC provided detail planning for the invasion of Normandy, D-Day.

As such, ADSEC did not have a "base" of operations because this support organization was designed to be on the move continuously. For example, major operations always had a designated "D" day or start date for operations. ADSEC units were moved into operating areas on or several days after a particular "D" day. They stayed until about the D+40, at which time FECOMZ (Forward Echelon, Communications Zone) units would take over. ADSEC units then moved forward to the next "D" location.

After the June 6, 1944 invasion ADSEC was detached from the U.S. First Army and took control of activities at the port of Cherbourg, with engineering activities that included the beaches and landing zones; taking over command of the areas left behind as the First Army moved forward. Besides bringing in supplies for the advancing armies, ADSEC also rehabilitated railway rolling stock and provided transportation of POL (Petroleum, Oil and Lubricants) using rail and motor operations (see Red Ball Express).

ADSEC units included field hospitals that lay near the rear areas of the advancing Armies. ADSEC also operated blood banks to store large quantities under refrigerated condition for use at front line hospitals. This system of location of storage depots were flexible, so that in advance of a major military operation blood would be stored where needed, close to front line actions, but when the engagement was over then blood would be transported back to hospitals and other bases, or wherever it was needed.

ADSEC also included Finance disbursement units. These units were employed to compute payrolls, travel vouchers, etc. and prepare disbursements and collections of monies.

ADSEC coordinated disbursement of ordnance and munitions to keep the front lines supplied.

ADSEC officials were responsible for overseeing Red Ball Express transportation activities within the ADSEC Transportation Section.

ADSEC units had to anticipate the needs of the advancing armies and provide as close support as possible to the advancing armies as the situations demanded. These units also provided heavy maintenance work for the advancing armies.