 Complete the following phrase:  On July 1, 1861, the Staunton Light Artillery, with its four bronze, 6-pounder guns and 107 officers and men, was formally mustered in the Confederate States Army. While commanding his artillery battery at the First Battle of Bull Run, Imboden perforated his left eardrum firing an artillery piece, causing subsequent deafness in that ear. He fought with Maj. Gen. Thomas J. Stonewall Jackson in the Valley Campaign at 