Ku dhammee weedhan soo socota: Markii Jaamacadda Beeraha ee New York (oo markii dambe lagu daray Jaamacadda Cornell) laga aasaasay Ovid, New York, Kimball wuxuu noqday Professor of Chemistry and Economic Geology. Markii uu qarxay Dagaalkii Sokeeye ee Mareykanka 1861, madaxweynaha kulliyadda, Maj. M. R. Patrick waxaa loo magacaabay Brigadier-General of Volunteers; Kimball wuxuu noqday Brig. Gen. Patrick's Chief of Staff, oo leh darajada Kabtan. Wuxuu arkay adeegga goobta ee Maj. Gen. Irvin McDowell, wuxuuna goob joog ka ahaa Dagaalkii Labaad ee Bull Run (Agoosto 28-30, 1862);
Dagaalkii Chantilly (Sebtember 1, 1862); Dagaalkii South Mountain (Sebtember 14, 1862); Dagaalkii Antietam (Sebtember 17, 1862); Dagaalkii Fredericksburg (December 11-15, 1862); Dagaalkii Chancellorsville (Abriil 30-May 6, 1863); iyo Dagaalkii Gettysburg (July 1-3, 1863). Brig. Gen. Patrick ayaa markaa loo magacaabay Taliyaha Ciidanka Potomac, iyo Kabtan Kimball ayaa ku wehliyay halkaas, isagoo ka shaqeynayay Shaqaalaha Guud ee General George B. McClellan, Ambrose Burnside, Joseph Hooker, iyo George Meade.