George, I would be pleased to have biographical info and photo(s) of your great-uncle Isaac Martin to add to the Soldiers' Rest web site, if you are so inclined. Our soldiers were not just names and dates.
I am glad to do this for any soldier who is at Soldiers' Rest, Vicksburg.
tinyurl.com/soldiers-rest
Most times, I am lucky if I have their compiled service record from fold3.com
I know they were glad to have your help setting those markers!
>Anna