In Pennsylvania, the Carlisle Fencibles are officially mustered in as Pennsylvania Volunteers

Carlisle, Pennsylvania recruited four companies of volunteers within a week of the firing on Fort Sumter.  The first of these, the "Sumner Rifles" left for Harrisburg on April 20, 1861 on a ninety day enlistment.  The remainder, including the "Carlisle Fencibles," remained in town awaiting the call.  The 62 men of the Fencibles were officially mustered in, selected their officers, and began training under a drill instructor from the nearby Cavalry Barracks.  They were finally called into active service on June 6, 1861 on a three year enlistment. (By John Osborne)