The Mud March is an abortive offensive in January 1863 by Union Army Major General Ambrose Burnside in the American Civil War.
Burnside has been trying to approach the Confederate capital of Richmond, Virginia, by crossing the Rappahannock River at Fredericksburg, but has been soundly defeated
The so-called Mud March is his second attempt at a river crossing.
The strategy is sound, but it fails because of dissension between generals, compounded by severe winter storms.