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
Order of battle for the American airborne landings in Normandy RAF Exeter Brig. Gen. Harold L. Clark at RAF Cottesmore Brig. Gen. Maurice M. Beach at RAF Greenham Common German chain of command Supreme Command West: Generalfeldmarschall Gerd von Rundstedt Army Group B: Generalfeldmarschall Erwin Rommel Seventh Army: Generaloberst Friedrich Dollman (died 28 June) LXXXIV Corps: General der Artillerie Erich Marcks (KIA 12 June) Order of battle for the American airborne landings in Normandy The Order of battle for the American airborne landings in Normandy is a list of the units immediately available for combat on the Cotentin Peninsula between June 6, 1944, and June 15, 1944, during the American