United States Regiments & Batteries > Pennsylvania > Infantry

April 22 The 12th Pennsylvania Infantry Regiment was organized at Pittsburg under the command of Colonel David Campbell, Lieutenant Colonel Norton McGiffin and Major Alexander Hays
April 24 The regiment moved to Harrisburg, Pennsylvania.
April 25 Reviewed by Governor Curtin and mustered into U.S. service, then immediately moved by rail to York, Pennsylvaia to become part of Patterson’s Deparment of Pennsylvania
May 25 Assigned to the Department of Annapolis. Assigned to guard duty on the strategically critical Northern Central Railroad from State line to Baltimore Maryland, relieving the 1st Pennsylvania Infantry. Regimental headquarters was at Cockeysville, Maryland with Companies I and K, with the other companies of the regiment widely scattered until the end of enlistment.
August 5 The 12th Pennsylvania Infantry Regiment mustered out.