http://books.google.com/books?id=8eFSK4o--M0C&pg=PA778&lpg=PA778&dq=battle+of+great+saltpeter+cave+KY&source=bl&ots=2NkLL_rZOU&sig=yrLFMWkvUEutC41_eDpI0e7FsSA&hl=en&ei=Lr1pTcbGMsSWtweb9JzmAg&sa=X&oi=book_result&ct=result&resnum=8&sqi=2&ved=0CFEQ6AEwBw#v=onepage&q=battle%20of%20great%20saltpeter%20cave%20KY&f=false
That should take you to page 778 which has a snippet.
Also, if you can check regimental histories of the units listed here: http://www.wildcatreenactment.org/page2.html
AND - look for letters and such in the hometown newspapers. There may be letters from the men published.