25th Pennsylvania Infantry Regiment
UNION ARMY INFANTRY REGIMENT
The 25th Pennsylvania Volunteer Infantry was a Three Months' Service infantry regiment which served with the Union Army during the American Civil War. Composed of "First Defenders" (the first five companies of men who responded to President Abraham Lincoln's call for volunteers to defend the nation's capital following the Fall of Fort Sumter to Confederate States Army troops in mid-April 1861) and five additional companies of early responders who enlisted later in April 1861,"25th Regiment, Pennsylvania Infantry (3 months, 1861)," in "Union Pennsylvania Volunteers," in "Battle Unit Details," in "The Civil War.