Mezue ahịrịokwu na-esonụ: N'afọ 1861, ná mmalite Agha Obodo nke United States, ọ bụ Adjutant nke Ndị Agha Ogwe Ugboro Atọ. N'oge na-adịghị anya mgbe nke ahụ gasịrị, ọ gbara arụkwaghịm iji sonyere ndị ọrụ nke General Edwin Vose Sumner dị ka onye isi "aide-de-camp", na-enweta ọkwa nke Major. Ọ bụ akụkụ nke ndị agha nke Potomac nke hụrụ ọgụ na agha nke Yorktown, Williamsburg, Fair Oaks, Seven Pines, Savage's Station, Glendale, Malvern Hill, Antietam, Fredericksburg (nke niile mere na 1862), na
Mgbapụta nke were site na Nọvemba 1863 ruo Disemba 1863.