It’s nearly impossible to imagine the scale of the D-Day invasion. On a single day—June 6, 1944—more than 156,000 American, British and Canadian troops executed the largest amphibious landing in history. It required nearly 7,000 ships and landing vessels, more than 2,300 aircraft and 867 gliders.
The invasion, known as Operation Overlord, was years in the making, long enough for Germany to construct miles of fortified beach defenses armed with machine guns, heavy artillery and anti-aircraft batteries. The brave young men who stormed the beaches of Normandy or parachuted behind enemy lines experienced some of the heaviest and deadliest fighting of the war.
Here are five of their stories.