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
Provisional Government of the French Republic on 3 June 1944, the day before Charles de Gaulle arrived in London from Algiers on Winston Churchill's invitation, and three days before D-Day. The CFLN itself had been created exactly one year earlier through the uniting of de Gaulle's ("Comité national français", or CNF) and Henri Giraud's organisations. Among its most immediate concerns were to ensure that France did not come under allied military administration, preserving the sovereignty of France and freeing allied troops for fighting on the front. After the liberation of Paris on 25 August 1944, it moved back to the capital, establishing a new "national unanimity"