Brook's Battery [also called Warrenton Light Artillery] was organized in April 1862. The company was assigned to the 12th Battalion Virginia Artillery, then in August became an independent command. It was assigned to J. I Brown's and W. T. Poague's Battalion of Artillery, and served with the Army of Northern Virginia from Fredericksburg to Cold Harbor, aided in the defense of Petersburg, then took part in the Appomattox Campaign. This unit lost nine percent of the 58 engaged at Gettysburg, and reported 2 officers and 10 men present for duty in September 1864. On April 9, 1865, it surrendered with 3 officers and 37 men. Captains James V. Brooke and Addison W. Utterback were in command.