First, thanks for that lead about Pony Hill. Very timely. I didn't know about that site.
Second, I just now noticed your query about the old 5th that you submitted on Independence Day. In all the coming and going I somehow missed it until just now. Sorry. I guess I have too many irons in the fire.
The lists and sources for the information you seek would take me a long while to put together. Lucky for you that has all been done for you--at least for 1863. I don't normally hawk my stuff on genealogy sites. As a historian I have problems with such activities. I enjoy working this site to help, not to make money. This is my hobby, and I am keeping my day job to keep from getting in that fix. Therefore, if you really want the leads for those answers, you can use Interlibrary Loan to borrow a copy of "Guerrilla Warfare in Civil War Missouri,Vol. II, 1863" that was released in the market in early 2007. Look for the chapters on NW MO and the sections in those chapters on that region north of the Missouri River. Use the index to find "Missouri Troops" and look up all the places where you find "5th (old) Cavalry Regiment Missouri State Militia." Men of the former 5th (old) were responsible for a lot of the atrocities particularly in Andrew County and perhaps some in Buchanan County. Not all their acts were traced to them directly, but I attempted to mention most of those in that book. Match the entries that interest you to their endnotes in the back and there are the references that often name the names. For the sake of space in my book I summarized a lot and left most of the names of the accused out. But, check out the references to find the names, and you can go from there. Most of those sources are from area period newspapers, especially the "St. Joseph Weekly Herald." Those newspapers are on microfilm which you may view either at the State Historical Society of Missouri at Columbia or request use of the microfilm rolls to be sent for a few days at a time at your local library on Interlibrary Loan.
I'm working now on the 1864 book. I just requested an extension, but it should reach the market by fall 2009.
Again, I apologize. I honestly did not see your 4 July request on this forum until just now.