This combination image shows, top, a sketch made available by the U.S. Army Signal Corps of the Union Army galloping into action on horseback at the Battle
This combination image shows, top, a sketch made available by the U.S. Army Signal Corps of the Union Army galloping into action on horseback at the Battle of Gettysburg, Pa, which took place July 1-3, 1863, during the American Civil War, and bottom, mounted Union re-enactors taking part in a demonstration of a battle during ongoing activities commemorating the 150th anniversary of the Battle of Gettysburg, Friday, June 28, 2013, at Bushey Farm in Gettysburg, Pa. ((AP Photo))