Two original captions: "Civil War Memories: Union and Confederate replica cannons, above, were fired during a Civil War program Saturday at Jefferson Barracks. Clarence Landgraf, left, wears a corporal's uniform from the Union Army. Scott Martin, 3 1/2, below, checks out the barrel of a cannon." "Union and Confederate replica cannons were fired Sunday at Jefferson Barracks as a part of a Civil War demonstration."