158 years ago, the Unionist and Confederate armies were on their second day of fighting at the town of Gettysburg. The battle was arguably the tipping point for the American Civil War and involved an artillery bombardment which may have been the loudest man-made event until the detonation of the first atomic bomb at Alamogordo. But what actually happened at Gettysburg? To take us through the events of the 1-3 July 1863, James spoke to Craig Symonds, a teacher at the US Naval Academy for 30 years and the author of countless books. Craig takes us through the lead up to the battle, the strategies in play and the bloody outcomes of this high watermark of the Civil War.