Personal Memoirs of P. H. Sheridan, General, United States Army

Philip Henry Sheridan (March 6, 1831[2] – August 5, 1888) was a career United States Army officer and a Union general in the American Civil War. His career was noted for his rapid rise to major general and his close association with General-in-chief Ulysses S. Grant, who transferred Sheridan from command of an infantry division in the Western Theater to lead the Cavalry Corps of the Army of the Potomac in the East. In 1864, he defeated Confederate forces in the Shenandoah Valley and his destruction of the economic infrastructure of the Valley, called "The Burning" by residents, was one of the first uses of scorched earth tactics in the war. In 1865, his cavalry pursued Gen. Robert E. Lee and was instrumental in forcing his surrender at Appomattox. While on his meteoric rise in the Union army, Philip H. Sheridan earned the enmity of many Virginians for laying waste to the Shenandoah Valley. His date and place of birth is uncertain, but he himself claimed to have been born in New York in 1831. Although he was destined to come out of the Civil War with the third greatest reputation among the victors, his military career did not begin auspiciously. It took him five years to graduate from West Point (1853) because of an altercation with fellow cadet and future Union general, William R. Terrill. (Excerpt from Wikipedia/Goodreads)