William F. Fox, Lt. Col. U. S. V., Regimental Losses in the American Civil War, 1861-1865: A Treatise on the extent and nature of the mortuary losses in the Union regiments, with full and exhaustive statistics compiled from the official records on file in the state military bureaus and at Washington

One Hundred and Twenty-First New York Infantry.

1,426 enrolled during the war; 226 killed == 15.8 per cent.

Total of killed and wounded, 839; died in Confederate prisons (previously included), 19.

Present, also, at Crampton's Gap; Gettysburg; Funkstown; Mine Run; Fort Stevens; Fisher's Hill; Appomattox.

notes.--Organized at Herkimer, N. Y., from companies raised in the Twentieth Senatorial District--Otsego and Herkimer counties. It was mustered into service on August 23, 1862, and the next week started for the scene of active operations. It was immediately ordered to join General McClellan's Army, then in Maryland, and it did so in time to witness the fighting at Crampton's Gap. It was assigned to Bartlett's Brigade, Brooks's Division, Sixth Corps, in which command (Second Brigade, First Division, Sixth Army Corps) it served during its entire service. The regiment faced a terrible fire of musketry at Salem Church, Va., where it lost 48 killed, 173 wounded, and 55 missing; total, 276, out of 453 officially reported as present. The missing ones were mostly all killed or wounded, and the loss was the heaviest sustained by any regiment in that battle. Colonel Upton was an officer of rare ability, and the regiment, which was composed of unusually good material, soon became, under Upton's care, a very efficient one. In the battle of Spotsylvania, May 10th, Colonel Upton commanded, and led in person, an assaulting column of twelve picked regiments belonging to the Sixth Corps, the One Hundred and Twenty-first being placed in the advance, an honor which cost it dear. Its losses at Spotsylvania amounted to 49 killed and 106 wounded; none missing. The regiment captured four flags at Rappahannock Station, and two at Sailor's Creek. Its casualties at the Wilderness were 15 killed, 37 wounded, and 21 missing; and at Cedar Creek, 10 killed, 42 wounded, and 5 missing. General Wright commanded the division at the Wilderness; General Russell at the Opequon; and General Wheaton at Cedar Creek.