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 the Sixth of June at the Long Beach Naval Shipyard whilst the beach landing was made at Point Dume California. Before the days of computer-generated imagery director Henry Koster had to make his landing look convincing on his limited budget with two LCVPs and eighty soldiers. In the invasion scene soldiers running out of the two landing craft appear in front of a back projection scene of another take of the same scene giving the appearance of twice as many landing craft and soldiers as there actually were. Unlike many American war films "D-Day the Sixth of June" presents the viewpoints of British characters