Mezue ahịrịokwu na-esonụ: N'afọ 1862, Cunningham duziri ụlọ ọrụ F n'agha n'oge agha nke abụọ nke Bull Run, Antietam na Fredericksburg. N'afọ 1863, o so lụọ agha Chancellorsville, Gettysburg na
Ịgba ọsọ nke m. N'afọ 1864, ka ọ na-achị otu ụlọ ọrụ na 32nd Massachusetts, Cunningham hụrụ ihe na Overland Campaign, usoro agha iji kpochapụ ndị agha Confederate nke Northern Virginia ma were isi obodo Confederate nke Richmond. Agha Ụgbọ Mmiri ahụ biri n'ụzọ na-enweghị isi ma rụpụta Ogige Petersburg dị ogologo.