Dee ihe na-aga n'ihu maka paragraf a - Site na ntiwapụ nke Agha Obodo, a họpụtara Brooks ka ọ bụrụ brigadier general nke ndị ọrụ afọ ofufo na Septemba 1861. O duziri 2nd Brigade, 2nd Division nke IV Corps na Peninsula Campaign, na 2nd Brigade, 2nd Division nke VI Corps na agha ụbọchị asaa, ebe ọ merụrụ ahụ na agha nke Savage's Station
Ọ dị mma. Mgbe ọ gbakere, ọ maliteghachiri idu ndị agha ya maka Mgbasa Ozi Maryland ma duru ndị ya na Crampton's Gap, ebe ha jidere ọkọlọtọ agha Confederate nke ndị agha Virginia nke 16. Na Agha Antietam, ndị agha Brooks nọ na nchekwa, ọ bụ ezie na n'okpuru "ọkụ ọkụ nke egbe na ndị na-agba ụta" ruo awa 48.