The battle wore on. The broken lines of frightening on both sides: after three days of battle, 51,000 human beings lay under the smoke either dead or maimed . Then, on the fourth day, both armies marched on; that is, those who could still march. The dead and the wounded had to be left behind. For the small town of Gettysburg, with only 2400 inhabitants at the time, the battle was at first an uni..