Tuhia he haere tonu mo tenei whitianga - I hoki a Gibbon ki te whakahau i te wehenga tuarua i te wa o te Whakatairanga o te whenua a Gen. Grant i te Mei me te Pipiri o te tau 1864, i kite i nga mahi i nga pakanga o te Wilderness, Spotsylvania Court House, me Cold Harbor. I te Pipiri 7, 1864, i whakatairangahia ia ki te rangatira nui o nga kaitautoko. I te pakanga o Petersburg i muri mai (Hune 1864 ki Paenga-whāwhā 1865), ka pouri a Gibbon i te kore o ana hoia ki te whawhai i te Teihana o Ream
i te marama o Akuhata 1864. I whakahau poto ia i te XVIII Corps i mua i tana wehenga mate, engari i te mea he nui rawa te uara o tana ratonga, ka hoki mai ia ki te whakahau i te XXIV Corps i hangaia hou i roto i te Army of the James. I awhina ana ana hoia ki te whakatutuki i te pakaru nui i te Pakanga Tuatoru o Petersburg i te Paenga-whawha 1865, i te hopu i a Fort Gregg, tetahi waahanga o nga parenga o te Confederate. I te pakanga o Appomattox, i awhina ia ki te aukati i te rerenga rerenga a te Rōpū i te Pakanga o Appomattox Courthouse, i hua ai te tuku a Gen. Lee. Ko ia tētahi o ngā kaitohutohu e toru mō te tuku a te Rōpū.