The 80th Illinois was heavily involved in all of the heavy battles of the Atlanta campaign and was constantly exposed to the enemy's fire for about three months. The 80th Illinois commenced its involvement on 3 May 1864 and participated in the battles of Dalton, Resaca, Adairsville, Cassville, Dallas, Pine Mountain, Kenesaw Mountain, Marietta, Peach Tree Creek, Atlanta, Jonesborough and Lovejoy's Station. During the campaign, the Regiment captured about 150 prisoners, and lost 25 killed and 60 wounded.