Marmaduke–Walker duel
On September 6, 1863, near Little Rock, Arkansas, a duel was fought between John S. Marmaduke and Lucius M. Walker, two generals in the Confederate States Army. Tension 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 retaliated by not informing Walker of a Confederate retreat.