Ulysses S. GrantAmerican politician and military commander Ulysses S. Grant (1822–1855) presided over the country as its 18th president from 1869 to 1877. He is most remembered for leading the Union Army as its commanding general during the American Civil War, a conlict he helped end by using daring and daring military tactics. Grant served in the Mexican-American War and rose through the ranks in the Civil War before becoming president, enjoying a great military career. Following his victorious assault against Confederate soldiers in Fort Donelson, Tennessee, when he demanded the foe's unconditional surrender, Grant earned the nickname "Unconditional Surrender". Grant was elected president in 1868 and spent two terms as president after serving as the military ruler of the seized Confederate states. His administration was distinguished by a number of noteworthy achievements, including as the approval of the 15th Amendment to the Constitution, which gave African American males the right to vote, and the creation of Yellowstone National Park, the first national park. One of the finest pieces of American writing is believed to be Grant's autobiography, which he wrote the year before he passed away. They provide an account of his military service from his own perspective and have received acclaim for their precision, openness, and wisdom. Read More Read Less