 Pennsylvanians also rose to prominence as political figures during the war, like Secretary of War Simon Cameron and the fiery Radical Republican abolitionist Representative Thaddeus Stevens.A small number of Pennsylvanians joined the ranks of the Confederacy, including such leaders Generals John C. Pemberton and Josiah Gorgas.Over 360,000 Pennsylvanians served in the Union Army, more than any other Northern state except New York.