Mezue ahịrịokwu na-esonụ: N'ihe ka ukwuu n'ime afọ abụọ mbụ ya, ndị agha nke 70 Indiana rụrụ ọrụ nnyocha ma chebe ụzọ ụgbọ okporo ígwè dị na Kentucky na Tennessee. N'afọ 1864, Harrison na ndị agha ya sonyeere William T. Sherman Atlanta Campaign ma kwaga n'ihu agha. Na Jenụwarị 2, 1864, a kwalitere Harrison ka ọ bụrụ onye isi nke 1st Brigade nke 1st Division nke XX Corps. Ọ bụ ya bụ onyeisi ndị agha n'agha ndị a lụrụ na
Resaca, Cassville, New Hope Church, Ugwu Echefuola, Ugwu Kennesaw, Marietta, Peachtree Creek, na Atlanta. Mgbe isi ike Sherman malitere njem ya n'Oké Osimiri, a kpọfere ndị agha Harrison na mpaghara Etowah ma sonye na Agha Nashville.