At the outbreak of war, twenty-year-old Francis Adams Donaldson enlisted in the 1st California Regiment (later known as the 71st Pennsylvania Volunteers) of the famous Philadelphia Brigade of the II Corps, Army of the Potomac. He fought at Ball's Bluff (where he was captured) and participated in the Peninsula Campaign until he was wounded at the Battle of Fair Oaks.
Upon his recovery, Donaldson reluctantly accepted promotion to a captaincy I the Corn Exchange Regiment (also known as the 118th Pennsylvania Volunteers), which served throughout its existence in the V Corps. In his new position, Donaldson participated in all the major campaigns and battles in the East through late 1863, including Antietam, Fredericksburg, Chancellorsville, Gettysburg, Bristoe Station, and Mine Run.
Although Donaldson made no secret of his distaste for writing he consistently sent home some of his letters filled as many as fifty pages of writing paper. Nearly all of his letter were written in camp of while on active campaign, im
