Tuhia he haere tonu mo tenei waahanga - I te tau 1863, i whakawhiwhia te puhiko a Elder ki te U.S. Horse Artillery Brigade, i reira i mahi ai mo te nuinga o te toenga o te pakanga. I whiwhi ia i te whakatairanga pumau ki te rangatira i te Akuhata 1, 1863. I tukuna mo te wa poto i te Hui-tanguru 1864, i whakahuatia a Elder mo te toa i te Pakanga o Olustee i Florida, a i whakawhiwhia ki te whakatairanga i te rangatira ki te rangatira. I te hokinga atu ki te Horse Artillery, i whakahuatia ano ia mo nga mahi i Drewry's Bluff
, Mei 5, 1864, ā, i whakawhiwhia ki a ia te tiamana o te rangatira. I noho tonu ia ki te ope taua i muri i te pakanga, a, i whakatairangahia ia ki te rangatira nui i te 2 o nga U.S. Artillery, Pipiri 30, 1882.