Amphibious warfare are still operating. On completion they were towed across the English Channel by tugs to the Normandy coast at only 4.3 Knots (8 km/h or 5 mph), built, operated and maintained by the Corps of Royal Engineers, under the guidance of Reginald D. Gwyther, who was appointed CBE for his efforts. By 9 June, just 3 days after D-Day, two harbours codenamed Mulberry "A" and "B" were constructed at Omaha Beach and Arromanches, respectively. However, a large storm on 19 June destroyed the American harbour at Omaha, leaving only the British harbour still intact but damaged, which included damage to
D-Day naval deceptions the western flank of the true invasion fleet. This operation was intended to lend confusion as to the extent of the landings in Normandy. Glimmer and Taxable were very similar operations. They were executed in the early hours of 6 June 1944 whilst the invasion fleet was approaching Normandy. Taxable simulated an invasion force approaching Cap d'Antifer and Glimmer threatened Pas-de-Calais. By dropping chaff in progressive patterns, Royal Air Force (RAF) bombers were able to create the illusion of a large fleet on coastal radar screens. Beneath the chaff, small boats towed radar reflector balloons and simulated the radio traffic