Reproduction of Major General George B. McClellan, ca. 1861-1865. McClellan was a prominent 19th century American military and political leader, born December 3, 1826, in Philadelphia, Pennsylvania. In 1842, McClellan received an appointment to the U.S. Military Academy at West Point. He graduated in 1846, ranking second in his class. McClellan resigned his army commission in 1857 to become involved in the railroad industry, and using his training in engineering from West Point, he served as an engineer for the Ohio & Mississippi Railroad and the Illinois Central Railroad. During this time, he lived primarily in Cincinnati, Ohio. With the beginning of the American Civil War in April 1861, McClellan reenlisted in the United States Army and p...