It moved on to the Peninsula early in the spring, took part in the operations of the siege of Yorktown and was first closely engaged in the battle of Fair Oaks (Also called Seven Pines), in which 106 were killed or wounded and 4 reported missing, out of 432 who went into action.

At Antietam the regiment was in the thick of the fight - led by Colonel Francis C. Barlow, the 61st NY, with the 64th NY, flanked the 'sunken road' which was holding up the advance, and delivered enfilade fire on the confederates in the road, and at Fredericksburg it served in Hancock's division in the charge on Marye's heights and lost 36 in killed, wounded and missing.

Miles made a gallant defense of the retreating union army which won them high praise, and at Gettysburg the loss was once more severe, participating on the II Corps' advance in the 'Wheatfield', where the regiment was exposed to heavy enemy fire, losing more than half its strength.

It joined in the first assault on Petersburg, June 15; was engaged at Deep Bottom, Strawberry Plains, Reams' station and Hatcher's Run.

Its record is a long and glorious one and it bravely earned its right to rank among the most gallant organizations of the Union army.