The corps made the opening fight in the Seven Days Battles, at Oak Grove, June 25, fighting again at Glendale on June 30, and at Malvern Hill on July 1; its losses in these engagements aggregated 158 killed, 1,021 wounded, and 794 missing; total, 1,973. The heaviest loss occurred in John C. Robinson's Brigade of Kearny's Division; the 1st New York, Berry's Brigade, also encountered a hot fire at Glendale.