 The regiment was consolidated with 15th Illinois Infantry on July 1, 1864, as the 14th and 15th Battalion Illinois Volunteer Infantry but reorganized as the 14th Illinois on April 28, 1865.The regiment was mustered out on September 18, 1865, at Fort Leavenworth, Kansas.The regiment suffered 62 enlisted soldiers killed in action or mortally wounded and 1 officer and 160 enlisted who died of disease, for a total of 223 fatalities.