 Gibbon akanga adzoka achitungamirira 2nd Division panguva yeGeneral Grants Overland Campaign muna May naJune 1864, achiona chiito muhondo dzeWilderness, Spotsylvania Court House, uye Cold Harbor. Musi waJune 7, 1864, akasimudzirwa kuva mukuru mukuru wevazvipiri. Mukati mekurwiswa kwakazotevera kwePetersburg June 1864 kusvika Kubvumbi 1865, Gibbon akaora mwoyo apo mauto ake akaramba kurwa paReams Station muna August 1864. Akapfupikisa akatungamirira XVIII Corps asati aenda pazororo rokurwara, asi basa rake riri rinokosha zvikuru, akadzoka kuzotungamirira XXIV Corps ichangobva kusikwa muHondo yeJames. Mauto ake akabatsira kubudirira muhondo yechitatu yePetersburg muna Kubvumbi 1865, vachitora Fort Gregg, chikamu chekudzivirirwa kweConfederate. Munguva yeAppomattox Campaign, akabatsira kuvhara nzira yekupukunyuka yeConfederate paHondo yeAppomattox Courthouse, zvichikonzera Gen. Lee kuzvipira. Akanga ari mumwe wavatariri vatatu nokuda kwokuzviisa pasi kweConfederate. 