He was Chief of Artillery, George W. Morell's division of the Army of the Potomac through most of 1862. He was assigned to duty by Maj. Gen. George G. Meade as the commander of the artillery brigade of the V Corps in May 1863 and participated in the Chancellorsville and Gettysburg campaigns, as well as the Mine Run Campaign.
He served as Chief of Artillery, George W. Morell's division of the Army of the Potomac throughout most of 1862. He was assigned to duty by Maj. Gen. George G. Meade as the commander of the artillery brigade of the V Corps in May 1863 and participated in the Chancellorsville and Gettysburg campaigns, as well as the Mine Run Campaign.