Where was the 3939 Quartermaster Gas Company on 13 December 1944?

The 3939th Gas Supply Company was in several locations from D-Day to the end of WWII. My father became the Company Commander two weeks after D-Day and served as such until the end 1945.  He had deployed to England in October 1943 as a platoon leader in the 556th Railhead Company as part of the 1st Engineer Special Brigade and took part in the D-Day landings at Utah Beach. He replaced the initial commander of the 3939th GS Co. who was relieved apparently for dereliction of duties.  My father commanded the 3939th from then until after the end of hostilities in Europe. The unit operated petroleum, oil, and lubricant (POL) locations across northern France, primarily refueling logistical resupply convoys. The unit holds the record for most vehicles refueled in one day. The unit used a number of POW's assigned to assist with general labor services, the exception being the actual refueling of vehicles to avoid any sabotage. In his files I found that even in wartime, he was Bonded and held accountable for the fuel his unit handled. Prior to his departure from Europe, audits were conducted of his fuel accounts, which as mentioned earlier were at various locations, and then signed over the inventories to his replacement.

Prior to D-Day, his unit, the 556th RH Co., participated in Exercise Tiger, a rehearsal on the southern coast of England in preparation for D-Day. In the very early dark hours of April 28th, the convoy of eight LST's that consisted of mainly logistical units of the 1st Engineer Bde, were attacked by German E-Boats. Three LST's were hit by torpedoes including my father's LST 289 which survived the attack. The other two sank and resulted in the death of over seven hundred men, primarily due to exposure in the cold channel waters.

I believe I still have a copy of the orders for the officer's and men of the 3939th awarding them their ETO Campaign Medal.