Following McClellan's disastrous Union loss at Antietam, Lincoln replaced him with Ambrose Burnside, who planned to march to the city of Fredericksburg, getting there before Lee and possibly marching all the way to Richmond. But once they confronted the Confederacy at the battle of Fredericksburg the Federals made 14 total charges that were all repulsed. One Federal general wrote “It was a great slaughter pen.  They may as well have tried to take Hell.”

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