Empire ship the Normandy invasion depended on the successful construction of the Mulberry ports. These were prefabricated ports, constructed at Southampton, Gosport, Portsmouth, Tilbury Docks, and even as far north as Birkenhead and Hartlepool. Two hundred tugs then took three months to tow the components of the harbours from where they were constructed to assembly areas on the South Coast. Between 7 June 1944 and the end of July, the tugs towed the materials across the channel to Normandy. Before D-Day, sixty old merchant ships and four old warships were selected as blockships, to be scuttled in a line to give protection
45th Airlift Squadron February 1944 until becoming part of IX Troop Carrier Command in England to participate in the buildup of forces prior to the Allied landings in France during D-Day in June 1944. Engaged in combat operations by dropping paratroops into Normandy near Ste-Mere-Eglise on D-Day, 6 June 1944, and releasing gliders with reinforcements on the following day. The unit received a third Distinguished Unit Citation and a French citation for these missions. After the Normandy invasion the squadron ferried supplies in the United Kingdom. The squadron also hauled food, clothing, medicine, gasoline, ordnance equipment, and other supplies to the front lines