Henry Warner Slocum , was a Union general during the American Civil War and later served in the United States House of Representatives from New York. During the war, he was one of the youngest major generals in the Army and fought numerous major battles in the Eastern Theater and in Georgia and the Carolinas. Controversy arose from his conduct at the Battle of Gettysburg, where he was accused of indecision and a dilatory advance to the battlefield, earning him the derogatory nickname Slow Come.
Slocum was born in Delphi, a hamlet in Onondaga County, New York. He attended Cazenovia Seminary and worked as a teacher. He obtained an appointment to the United States Military Academy at West Point in 1848, where he did well academically, graduating 7th of 43 in his 1852 class considerably better than his roommate, Philip Sheridan. He was commissioned a second lieutenant in the 1st U.S. Artillery on July 1, 1852. He served in the Seminole War in Florida and at Fort Moultrie in Charleston Harbor, married Clara Rice in 1854, and was promoted to first lieutenant on March 3, 1855. He resigned his commission October 31, 1856, and settled in Syracuse, New York.
Source: Wikipedia