Mezue ahịrịokwu na-esonụ: Ka ọ na-erule afọ 1863, e kenyere batrị Elder na U.S. Horse Artillery Brigade, ebe o jere ozi n'ihe ka ukwuu n'oge agha ahụ fọdụrụnụ. E buliri ya n'ọkwa onye isi n'ụbọchị mbụ nke ọnwa Ọgọstụ, afọ 1863. A kpọpụrụ Elder n'oge na-adịghị anya na Febụwarị 1864, a kpọtụrụ Elder aha maka ịdị uchu n'agha nke Olustee na Florida, ma nye ya nkwalite brevet ka ọ bụrụ isi. Mgbe ọ laghachiri na ndị agha Horse Artillery, a kpọkwara ya aha ọzọ maka ime ihe na
Drewry's Bluff, Mee 5, 1864, ma bụrụkwa onye isi ndị agha. Ọ nọgidere na ndị agha mgbe agha ahụ gasịrị, wee bulie ya n'ọkwa onye isi na 2nd US Artillery, June 30, 1882.