Kammala jumla mai zuwa: Rundunar ta shiga cikin George B. McClellan's Peninsula Campaign na 1862, yana taka muhimmiyar rawa wajen kawar da hare-haren Confederate a
Bakwai Pines da Malvern Hill. Bayan yakin, IV Corps ya kasance a kan Peninsula, tare da sashen Couch daga baya ya rabu. An haɗe da sashin Virginia a karkashin John A. Dix, kuma ya shiga (tare da VII Corps) a cikin ƙananan ayyukan da aka yi wa Richmond a lokacin yakin Gettysburg. An dakatar da hukumar a ranar 1 ga Agusta, 1863. Daga bisani an shafe abubuwa na IV Corps a cikin XVIII Corps.