Final answer:
Operation Overlord was the largest amphibious invasion in history, with the aim of establishing a foothold in Europe to liberate it from German occupation. Led by General Eisenhower, the invasion involved troops from the United States, Britain, and Canada, who landed across five beaches in Normandy, France.
Step-by-step explanation:
The purpose of Operation Overlord was to establish a foothold in Europe. It was the largest amphibious invasion in history and aimed to open a second front in order to liberate Europe from German occupation during World War II. General Dwight D. Eisenhower led the invasion, which involved 156,000 American, British, and Canadian troops landing across five beaches in Normandy, France. The successful establishment of the beachhead allowed for the landing of more troops and heavy equipment, leading to the eventual liberation of France and the advance across northern Europe.