<P> The decision to undertake a cross-channel invasion in 1944 was taken at the Trident Conference in Washington in May 1943 . General Dwight D. Eisenhower was appointed commander of Supreme Headquarters Allied Expeditionary Force ( SHAEF ) , and General Bernard Montgomery was named as commander of the 21st Army Group , which comprised all the land forces involved in the invasion . The coast of Normandy was chosen as the site of the invasion , with the Americans assigned to land at sectors codenamed Utah and Omaha , the British at Sword and Gold , and the Canadians at Juno . To meet the conditions expected on the Normandy beachhead , special technology was developed , including two artificial ports called Mulberry harbours and an array of specialised tanks nicknamed Hobart 's Funnies . In the months leading up to the invasion , the Allies conducted a substantial military deception , Operation Bodyguard , using both electronic and visual misinformation . This misled the Germans as to the date and location of the main Allied landings . Adolf Hitler placed German Field Marshal Erwin Rommel in charge of developing fortifications all along the Atlantic Wall in anticipation of an invasion . </P>
<P> The decision to undertake a cross-channel invasion in 1944 was taken at the Trident Conference in Washington in May 1943 . General Dwight D. Eisenhower was appointed commander of Supreme Headquarters Allied Expeditionary Force ( SHAEF ) , and General Bernard Montgomery was named as commander of the 21st Army Group , which comprised all the land forces involved in the invasion . The coast of Normandy was chosen as the site of the invasion , with the Americans assigned to land at sectors codenamed Utah and Omaha , the British at Sword and Gold , and the Canadians at Juno . To meet the conditions expected on the Normandy beachhead , special technology was developed , including two artificial ports called Mulberry harbours and an array of specialised tanks nicknamed Hobart 's Funnies . In the months leading up to the invasion , the Allies conducted a substantial military deception , Operation Bodyguard , using both electronic and visual misinformation . This misled the Germans as to the date and location of the main Allied landings . Adolf Hitler placed German Field Marshal Erwin Rommel in charge of developing fortifications all along the Atlantic Wall in anticipation of an invasion . </P>
which three nations participated in the d-day operations in normandy
which three nations participated in the d-day operations in normandy
the Americans the British the Canadians
the Americans the British the Canadians