Robert Lochner (engineer) major element, the Mulberry Harbour. One of the major challenges facing the D-Day landings was to secure a European port for the delivery of essential supplies, but instead of capturing an existing port, the Allies decided on an audacious plan to build temporary harbours off the coast of Normandy. The big challenge in the rough seas of the English Channel was to create a breakwater to protect the concrete landings from the vicious waves and Robert Lochner was the man chosen by Churchill to lead a group of scientists known as The Wheezers And Dodgers to solve this challenge. The
D-Day (military term) originally set for June 5, 1944, but bad weather and heavy seas caused U.S. Army General Dwight David Eisenhower to delay until June 6 and "that" date has been popularly referred to ever since by the short title "D-Day". Because of the connotation with the invasion of Normandy, planners of later military operations sometimes avoided the term to prevent confusion. For example, Douglas MacArthur's invasion of Leyte began on "A-Day", and the invasion of Okinawa began on "L-Day". The Allies' proposed invasions of Japan would have begun on "X-Day" (on Kyūshū, scheduled for November 1945) and "Y-Day" (on Honshū, scheduled