Whakaotihia te rerenga e whai ake nei: I te tau 1862, i whakahau a Cunningham i te Kamupene F i te pakanga i nga pakanga o te Bull Run Tuarua, Antietam me Fredericksburg. I te tau 1863, i uru ia ki nga pakanga o Chancellorsville, Gettysburg me
Ka rere ahau. I te tau 1864, i a ia ano e whakahau ana i tetahi kamupene i te 32 o Massachusetts, i kite a Cunningham i nga mahi i roto i te Overland Campaign, he raupapa pakanga e whai ana ki te tarai i te ope Confederate o Northern Virginia me te tango i te taone nui o Richmond. I mutu te pakanga o te whenua i te mutunga, a, i puta te whakapae roa o Petersburg.