The University of Oklahoma has digitized and posted the Civil War diary of Charles Koff. Here's their description:
"Kroff enlisted in Company "F" of the 11th Indiana Infantry Volunteers on July 12, 1861, at the age of 23. The diary describes his experiences during four years and one month of service: the battles, the news he heard about the War in other parts of the country, and the problems of soldiering. Kroff's regiment fought fifteen regular battles, including Shiloh, the capture of Corinth, and the battle at Fort Donelson. The regiment was under fire seventy-seven different days. The last official entry of the diary is August 11, 1865, when the 11th Indiana Infantry Volunteers received their pay and went their separate ways. There is an additional entry dated December 11, 1909, the seventy-second birthday of Charles Kroff."
Here's the link:
http://digital.libraries.ou.edu/cdm/singleitem/collection/Cr...I'm not related -- just thought I'd share...