Captain William H. Reynolds, promoted to lieutenant colonel at Darnestown, Maryland.
First Lieutenant Thomas F. Vaughan, promoted to captain at Point of Rocks, Maryland.
First Lieutenant J. Albert Munroe, promoted to captain at Darnestown, Maryland.
Second Lieutenant John Tompkins, promoted to captain at Darnestown, Maryland; promoted to major at Fredericksburg, Virginia.
Second Lieutenant Wm. B. Weeden, promoted to captain at Point of Rocks, Maryland.
Sergeant Major George E. Randolph, promoted to lieutenant at Point of Rocks, Maryland; promoted to captain at Darnestown, Maryland.
Quartermaster Sergeant Albert E. Adams, promoted to lieutenant at Falmouth, Virginia.
Sergeant John H. Hammond, left the battery at Harrison Landing. Transferred to Portsmouth Grove, Rhode Island, and made lieutenant in Hospital Guard.
Sergeant William H. Walcott, promoted to lieutenant in the regular army, at Point of Rocks, Maryland.
Sergeant G. Holmes Wilcox, left the battery at Harrison Landing, sick.