My grandfather Jay Horton's headstone says that he was a member of the 310th Sanitary then there is the abreviation TN. Since he is buried in Spencer Mills (Township )Cemetery he must have went with this unit from michigan and that the tn stood for train. There is a 310th Sanitary Tain who were known as the Polar Bears out of Detroit and were stationed in Russia. I was looking for perhaps a roster and really anything that i can find out about the 310th sanitary train.