English: A 19th century image of Jack Frost as a Union General during the American Civil War. Source: http://www.sonofthesouth.net/leefoundation/civil-war/1861/october/jack-frost.jpg via http://www.sonofthesouth.net/leefoundation/civil-war/1861/october/jack-frost.htm Harper's Weekly, 5 October 1861. CAPTION: OUR NEW MAJOR-GENERAL. "Our faithful old Ally of the North, GENERAL JACK FROST, shall come and clear away the Malaria of the South, and we shall march Southward from this place, and there shall be no footsteps backward until this Rebellion is crushed out of this Union."-Speech of Major-General BUTLER.