Nearly 8,000 men were killed in the battle which is considered a turning point in the war, halting Confederate advances into the north.Above: Field where General Reynolds fell at the Battle of Gettysburg, Pennsylvania. The battle took place from July 1 to July 3, 1863. Original Artwork: From  'Gardner's Photographic Sketch Book of the War', Volume I, plate 37 - pub. 1866. Photo: Timothy H. O'Sullivan, Getty Images / Hulton Archive