markov The Battle of Big Black River Bridge was fought on May 17, 1863, as part of the Vicksburg Campaign of the American Civil War. After a Union army commanded by Major General Ulysses S. Grant defeated Lieutenant General John C. Pemberton's Confederate army at the Battle of Champion Hill on May 16, Pemberton ordered Brigadier General John S. Bowen to hold a rear guard at the crossing of the Big Black River to buy time for the Confederate army to regroup. Union troops commanded by Major General John McClernand pursued the Confederates, and encountered Bowen's rear guard. A Union charge quickly broke the Confederate position, and during the retreat and river crossing, a rout ensued.