Fitz-John Porter (1822-1901): Union general. West Point graduate and veteran of the Mexican War. Made colonel and then brigadier general in 1861, he became major general and commander of the V Corps of the Army of the Potomac in 1862. A friend and supporter of George B. McClellan, he fought in the Peninsular Campaign, but John Pope thought his performance at Second Bull Run unacceptable; Pope had Porter relieved. A court-martial cashiered him in 1863. He was reinstated in 1886. His case became a cause celebre, because it was to a significant extent political and personal; Porter had supported McClellan ande Democratic principles against Pope and Republican principles. After the Civil War, he was active in construction and mining and also served in the New York City government.