The Civil War, which ended in the spring of 1865, claimed over 620,000 lives - more lives than any conflict in U.S. history. It required the establishment of the country’s first national cemeteries. In 1868, May 30th was declared a day to remember those fallen in the Civil War. The date May 30th was chosen primarily because it was not a date of any particular battle over the years of the war. Initially called Decoration Day, in 1967 the name was changed to Memorial Day, and in 1971 the date was changed to the last Monday in May.