3rd Pennsylvania Reserve Regiment

3rd Pennsylvania Reserve Regiment
Pennsylvania flag
Active	May 20, 1861 to June 17, 1864
Country	United States
Allegiance	Union
Branch	Infantry
Engagements	Battle of Mechanicsville Battle of Gaines' Mill Battle of Glendale Battle of Malvern Hill Battle of Second Bull Run Battle of South Mountain Battle of Antietam Battle of Fredericksburg Battle of Cloyd's Mountain Battle of Winchester Battle of Cedar Creek

The 3rd Pennsylvania Reserve Regiment, also known as the 32nd Pennsylvania Volunteer Infantry Regiment, was an infantry regiment that served in the Union Army during the American Civil War. It was part of the 2nd Brigade of the Pennsylvania Reserves division.

The 3rd Pennsylvania Reserves were raised at Philadelphia, Pennsylvania, on May 20, 1861. Horatio G. Sickel served as the regiment's first colonel, William S. Thompson as lieutenant colonel and Richard H. Woolworth as major. It was sent to Washington, D.C., where the division was assigned to the I Corps of the Army of the Potomac. The I Corps remained in northern Virginia instead of following the rest of the Army for the Peninsula Campaign in 1862. In May, due to Maj. Gen. George B. McClellan's demands for reinforcements, the division was sent the Peninsula as well. The 3rd performed well during the Seven Days Battles, but lost over one hundred men.

In August, the Army of the Potomac was transferred to northern Virginia to support the Army of Virginia. The 3rd Pennsylvania Reserves then fought at Turner's Gap in the Battle of South Mountain and at the Battle of Antietam. At the Battle of Fredericksburg on December 13, the 3rd formed part of the force which briefly broke through the Confederate right. It was among the last units to withdraw and suffered 128 casualties.