Who fought in d-day war?

D-Day, which took place on June 6, 1944, was a pivotal operation during World War II, primarily involving Allied forces against Nazi Germany. The main participants on the Allied side were American, British, and Canadian troops, who launched a massive amphibious invasion on the beaches of Normandy, France. The operation aimed to establish a foothold in Europe and ultimately led to the liberation of Western Europe from Nazi occupation. German forces defended against the invasion, resulting in intense fighting and significant casualties on both sides.