ADSEC shoulder patch

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.
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.