22nd Regiment, Ohio Infantry
The 22nd Regiment, Ohio Infantry mustered in November 5, 1861 at Benton Barracks, Missouri. They were mustered out November 18, 1864 at Camp Dennison, Ohio. 
Companies in this Regiment with the Counties of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.
National Park Service, The Civil War Soldiers and Sailors System, (accessed 6 December 2010).
- National Park Service, The Civil War Soldiers and Sailors System, (accessed 6 December 2010).