The Yank and the Rebel were two Civil War era soldiers who fought in the battle of Gettysburg in 1863. During the battle, they fell into a fissure and were put into suspended animation by a radioactive pool. In 1941, soldiers were running maneuvers when vibrations from the modern cannons re-open the fissure. The Civil War soldiers were revived and told by the military that neither side won, but the Union of the Nation was preserved. Inspired by this, they put aside their differences and worked together with the Army, though keeping their Civil War uniforms, to flush out spies and saboteurs.