Player Embed Code: Download Embed Share 75 Years Later, D-Day Vets Remember Defense.gov June 5, 2019 | 4:59 Seventy-five years ago, nearly 160,000 Allied troops embarked on D-Day, the greatest military mission in history, which turned the tide of World War II. Thousands of brave Americans never came home from that fight, but for those who did, the decades that have passed haven’t diminished their memories.