F is for Fredericksburg Battle. This happened on September 19-20, 1862. More than ten thousand Northerner soldiers were killed or wounded because of the fight against Lee’s army in Fredericksburg, Virginia.. On Oct. 6 the President told McClellan to " cross the Potomac and give battle to the enemy, or drive him South.” It took 24 days before McClellan to go because he said he had a small amount of supplies and men. At the end we had won. That is what happened at Fredericksburg Battle.