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
D-Day (game) part due to its simplicity. Along with "Stalingrad" and "Afrika Korps", it was considered one of the "classic" games released in the 1960s by Avalon Hill, all of which shared a similar move-attack-advance game system. D-Day (game) D-Day is a board wargame published by Avalon Hill first in 1961 and later re-released in 1965, 1971, 1977 and 1991. An operational/strategic simulation of the Western Front between June and September, 1944, the game simulates the invasion by the Allies of France while it was occupied by the Axis Powers. The title references the Normandy Landings in France on 6 June 1944,