Player Embed Code: Download Embed Share Ceremony Marks 80th Anniversary of Pearl Harbor Attack Defense.gov Dec. 7, 2021 | 01:05:57 The Navy and National Park Service hold a remembrance ceremony to honor the legacy of the soldiers, Marines, Coast Guardsmen, sailors and civilians who defended America in World War II, from the opening battle on Dec. 7, 1941, until peace was secured on Sept. 2, 1945.