78th Illinois Volunteer Infantry Regiment The 78th Illinois Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War . History . The 78th Illinois Infantry Regiment Regiment was organized at Quincy , Illinois in Adams County , mustering in on September 1 , 1862 . The 78th Illinois then left the state by way of the steamboat along the Mississippi River for Louisville , Kentucky , arriving on September 19 , 1862 . The 78th Illinois Infantry Regiment Regiment was organized at Quincy , Illinois in Adams County . The 78th Illinois Infantry Regiment , would see all of its wartime duty in the Western Theater of the American Civil War . The 78th Illinois was originally attached to 39th Brigade , 12th Division , Army of the Ohio . The regiment went through a series of reassignments ; first in November 1862 to Gilbert ' s Command , District of Western Kentucky , Department of the Ohio . While in Franklin , Tennessee , in February 1863 the regiment was assigned to the Army of Kentucky , Department of the Cumberland . In June 1863 , another reassignment assigned the 78th Illinois to the 2nd Brigade , 1st Division Reserve Corps , Army of the Cumberland . The final reorganization would come in October 1863 , assigning the regiment to the 2nd Brigade , 2nd Division , XIV Corps . Operations In North Georgia and North Alabama against Forest and Hood ( September 29 - November 3 , 1864 ) Strength and Casualties . When the regiment mustered in on September 1 , 1862 it included 862 enlisted men . The regiment suffered 9 officers and 95 enlisted men who were killed in action or mortally wounded and 117 enlisted men who died of disease , for a total of 221 fatalities . Regimental Organization . Headquarters . The 78th Illinois Infantry Regiment Regiment was organized at Quincy , Illinois in Adams County . Commanding Officers Company A . Recruited in Schuyler County , Illinois . Company B . Recruited in Adams County , Illinois . Companies B and C were captured by , then Colonel , John Hunt Morgan during a December 26 , 1862 raid at Muldraughs Hill . They were sent to St . Louis , Missouri , under terms of parole and not exchanged until October 1863 , effectively reducing the regiment by two companies of infantry . Company C . Recruited in McDonough County , Illinois . Company D . Recruited in Hancock County , Illinois . Company E . Recruited in Adams County , Illinois . Company F . Recruited in Adams County , Illinois . Company G . Recruited in Adams County , Illinois . Company H . Recruited in Hancock County , Illinois . During the same raid that captured Companies B and C , Colonel Morgan attacked the Regimenal Headquarters and Company H , on the morning of December 30 , 1862 , in New Haven , Kentucky . The company sustained no casualties , but it was assumed that Colonel Morgan ' s cavalry did , but was never substantiated . Company I . Recruited in McDonough County , Illinois . Company K . Recruited in Adams County , Illinois . Further reading . Robbins , Edward Mott " Civil War experiences , 1862 - 1865 : Chickamauga , Mission Ridge , Buzzard Roost , Resaca , Rome , New Hope Church , Kenesaw Mountain , Peach Tree Creek , Atlanta , Jonesboro , Averysboro , Bentonville " Carthage , 1919 .