Nyorera kupfuurira kweiyi ndima - Mukati megore ra1862, Cunningham akatungamira Kambani F muhondo panguva yehondo dzeChipiri Bull Run, Antietam naFredericksburg. Muna 1863, akapinda muhondo dzeChancellorsville, Gettysburg uye Mine Run
. Muna 1864, achiri kutungamira kambani mu32nd Massachusetts, Cunningham akaona chiito muOverland Campaign, nhevedzano yehondo dzakanangana nekupwanya mauto eConfederate eNorthern Virginia nekutora guta guru reConfederate reRichmond. Kurwisa Kwomunyika kwakaguma nokusava nomugumisiro uye kwakaguma nokurwiswa kwenguva refu kwePetersburg.