Question: was d day the largest invasion in history

Answer: No, The Normandy landings were the landing operations on Tuesday, 6 June 1944 of the Allied invasion of Normandy in Operation Overlord during World War II. Codenamed Operation Neptune and often referred to as D-Day, it was the largest seaborne invasion in history. The operation began the liberation of German-occupied France (and later Europe) from Nazi control, and laid the foundations of the Allied victory on the Western Front.