Tuhia he tohutoro mō tēnei wāhanga - I te ngahuru o te tau 1863 a puta noa i te hotoke, i uru te ope taua ki ngā "whawhai pōhara". I mahi a Gwyn i te wa e whakahau ana ia i te 118th Regiment mo nga marama e rima i muri mai me te kore he whakaeke nui tae noa ki te Pakanga o te Wilderness i Mei 1864. I te ra tuatahi o te pakanga, Mei 5, i werohia a Gwyn ki te huha, a, i whakakorehia mo te iti rawa i te marama kotahi. Ka whakawhiwhia a Gwyn ki tana whakatairanga hei koroneela i Beverly Ford mo ana mahi i Wilderness. Na tona whara, kaore i taea e ia te arahi i te 118th Regiment ki nga pakanga maha, tae atu ki te Pakanga o Spotsylvania Court House, te Pakanga o North Anna, te Pakanga o Totopotomoy Creek
, te Pakanga o Bethesda Church, me te Pakanga o Cold Harbor.