The Marmaduke–Walker duel was fought between John S. Marmaduke and Lucius M. Walker, two generals in the Confederate States Army, on September 6, 1863 near Little Rock, Arkansas. Tensions had risen between the two officers during the Battle of Helena on July 4, 1863, when Marmaduke accused Walker of not supporting his force, and then did not inform Walker of a Confederate retreat. Marmaduke was later assigned to serve under Walker during a Union advance against Little Rock. Walker did not support Marmaduke during a retreat after the Battle of Brownsville, and Marmaduke questioned Walker's courage after the Battle of Bayou Meto on August 27. A series of notes passed between the two generals by friends resulted in a duel, during which Walker received a fatal wound. Marmaduke was arrested, bu