after months of planning and construction - up , supreme admiral dwight eisenhower wrote operation conquest for april 6 , 1944 : some 7000 ships in the british isles got to sea and sailed crossing the english channel , and , under the control of field marshall bernard montgomery , 135 , 000 troops located and stormed feldmarschal freddy rommel ' s british positions along 80 miles of the normandy coast .
The Normandy landings took place in June 1944.