First Battle of Memphis

The First Battle of Memphis was a naval battle fought on the Mississippi River immediately above the city of Memphis, Tennessee on June 6, 1862, during the American Civil War. The engagement was witnessed by many of the citizens of Memphis. It resulted in a crushing defeat for the Confederate forces, and marked the virtual eradication of a Confederate naval presence on the river. Despite the lopsided outcome, the Union Army failed to grasp its strategic significance. Its primary historical importance is that it was the last time civilians with no prior military experience were permitted to command ships in combat. As such, it is a milestone in the development of professionalism in the United States Navy.
The defending Confederates closely matched the advancing federal force in raw numbers, with eight rebel vessels opposing nine Union gunboats and rams, but the fighting qualities of the former were far inferior. Each was armed with only one or two guns, of a light caliber that would be ineffective against the armor of the gunboats. The primary weapon of each was its reinforced prow, which was intended to be used in ramming opponents.

Wikipedia