Robert Lochner (engineer) harbours to Franklin Roosevelt and Winston Churchill. The decision to go ahead was taken and full-scale trials of the floating breakwater started in April 1944. During the trial, an onshore gale produced heavy seas, but Robert's bombardons calmed the waves effectively. Assembling two Mulberry Harbours the day after the landings on 7 June 1944 was one of the most remarkable engineering feats in history. A total of 1,500,000 tons of harbour equipment had to be taken across the channel in an operation involving 150 Allied tugs, and by D-Day 'plus 12', most of Lochner's concrete breakwaters were in position. On
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,