Ulysses S. Grant (born Hiram Ulysses Grant; April 27, 1822 – July 23, 1885) was an American soldier and politician who served as the 18th president of the United States from 1869 to 1877. Before his presidency, Grant led the Union Army as Commanding General of the United States Army in winning the American Civil War. Before his presidency, Grant led the Union Army as Commanding General of the United States Army in winning the American Civil War. As president, Grant worked with the Radical Republicans in the Reconstruction of the Union while having to deal with corruption in his administration. The Liberal Republicans and Democrats united behind Grant's opponent in the presidential election of 1872, but Grant was handily re-elected. Grant's Native American policy had both successes and failures. In foreign affairs, the Grant administration peacefully resolved the Alabama claims against Great Britain, but the Senate rejected Grant's prized Caribbean Dominican Republic annexation. Corruption in the executive branch became notorious: several of Grant's cabinet members and other appointees were fired or had to resign.