Memorial Day is a U.S. federal holiday observed on the last Monday in May to honor and mourn military personnel who have died while serving in the United States Armed Forces. Originally called Decoration Day, it began after the American Civil War to commemorate Union soldiers who died in the conflict by decorating their graves with flowers. The first national observance was held on May 30, 1868, following a proclamation by John A. Logan, commander of the Grand Army of the Republic, an organization of Union veterans
. Over time, Memorial Day expanded to honor all American military personnel who died in service during any war. The holiday was officially renamed Memorial Day and moved to the last Monday in May by federal legislation in 1971. It is marked by visiting cemeteries and memorials, placing American flags on graves, and a National Moment of Remembrance at 3 p.m. local time to reflect on the sacrifices of fallen service members
. Memorial Day is distinct from Veterans Day, which honors all who have served in the military, living or deceased, while Memorial Day specifically commemorates those who died in service
. In summary, Memorial Day celebrates and solemnly remembers the courage, dedication, and ultimate sacrifice of U.S. military personnel who gave their lives defending the nation
