Rubuta ci gaba don wannan sakin layi - A shekara ta 1863, an ba da batirin Elder ga Brigade Artillery Brigade, inda ya yi aiki don yawancin sauran yakin. Ya sami ci gaba na dindindin ga kyaftin a ranar 1 ga Agusta, 1863. An cire shi a takaice a watan Fabrairun 1864, an ambaci Elder don nuna jaruntaka a yakin Olustee a Florida, kuma an ba shi lambar yabo ga manyan. Komawa zuwa Artillery Artillery, an sake kira shi don ayyukan a Drewry's Bluff
, 5 ga Mayu, 1864, kuma an ba shi lambar yabo ta Lieutenant Colonel. Ya kasance tare da Sojojin bayan yakin, kuma an ci gaba da shi zuwa babban jami'in a cikin 2nd US Artillery, Yuni 30, 1882.