One of seven infantry corps in the Army of the Potomac.

Commander: Maj. Gen. John F. Reynolds (September 21, 1820 – July 1, 1863). Career soldier from Lancaster, Pennsylvania; USMA 1841. Killed in action on July 1 in Herbst’s Woods.

Strength: 12,222

Losses: 6,059; 666 killed, 3,231 wounded, 2,162 missing.

Monuments and Memorials of the First Corps