Pedzisa mashoko anotevera: Apo New York State Agricultural College (yakazobatanidzwa neCornell University) yakavambwa muOvid, New York, Kimball akava Purofesa weChemistry neEconomic Geology. Pakatanga Hondo Yenyika yeAmerica muna 1861, purezidhendi wekoreji, Maj. M. R. Patrick akagadzwa Brigadier-General weVanozvipira; Kimball akazova Brig. Gen. Patrick's Chief of Staff, aine chinzvimbo chaKaputeni. Akaona basa remunda pasi paMaj. Gen. Irvin McDowell, uye aivepo paHondo yechipiri yeBull Run (Nyamavhuvhu 28-30, 1862);
Hondo yeChantilly (1 Gunyana 1862); Hondo yeSouth Mountain (14 Gunyana 1862); Hondo yeAntietam (17 Gunyana 1862); Hondo yeFredericksburg (11-15 Zvita 1862); Hondo yeChancellorsville (30 Kubvumbi-6 Chivabvu 1863); uye Hondo yeGettysburg (1 Chikunguru, 1863). Brig. Gen. Patrick akabva agadzwa kuva Provost Marshal weArmy of the Potomac, uye Captain Kimball akaenda naye ikoko, achishanda paGeneral Staff pasi peGeneral George B. McClellan, Ambrose Burnside, Joseph Hooker, naGeorge Meade zvakateedzana.