Served on board the USS Richmond in the action at Mobile Bay, 5 August 1864, where he was recommended for coolness and good conduct as a gun captain during that engagement which resulted in the capture of the rebel ram Tennessee and in the destruction of Fort Morgan. Brazell served gallantly throughout the actions with Forts Jackson and St. Philip, the Chalmettes, batteries below Vicksburg, and was present at the surrender of New Orleans while on board the USS Brooklyn.