Christmas in the American Civil War (1861–1865) was celebrated in both the United States and the Confederate States of America although the day did not become an official holiday until five years after the war ended. The war continued to rage on Christmas and skirmishes occurred throughout the countryside. Celebrations for both troops and civilians saw significant alteration. Propagandists, such as Thomas Nast, used wartime Christmases to reflect their beliefs. In 1870, Christmas became an official Federal holiday when President Ulysses S. Grant made it so in an attempt to unite north and south.