Rubuta ci gaba don wannan sakin layi - Indiana ta 14 ta yi yaƙi a yakin Antietam, na biyu na Fredericksburg, yakin Chancellorsville, da kuma yakin Gettysburg. A Gettysburg, Indiana ta 14 ta taimaka wajen tabbatar da Cemetery Hill. Daga ranar 16 ga watan Agusta zuwa 6 ga watan Satumba, 1863, an ba da umurni ga aikin a Birnin New York don taimakawa wajen hana ci gaba da tashin hankali bayan tashin hankalin da aka yi a Birnin New York a watan Yulin 1863. Bayan dawowarsa aiki, rundunar ta yi yaƙi a cikin Bristoe Campaign da Mine Run Campaign
, da kuma manyan fadace-fadace da yawa, gami da Yaƙin daji da Yaƙin Kotun Kotun Spotsylvania. Yaƙin Cold Harbor shi ne na karshe na karshe na rundunar kafin ta bar gaba a ranar 6 ga Yuni, 1864. Membobin kungiyar da suka kammala aikin soja sun yi aiki a ranar 20 ga Yuni, 1864, a Indianapolis; tsoffin sojojinta da suka sake shiga da sauran sabbin ma'aikata an tura su zuwa 20th Regiment Indiana Infantry.