I found this Union tombstone for Thomas H. Glenn, 14th MO Cavalry, Co. "I"...I tried to read it carefully...but I've learned there was no company "I" only A-H. I did find him in the Regiment on the Soldiers/Sailors Combined System. But no company is given. Does anyone know why? He was from Livingston Co. MO. Lived at least to 1910. Bur. in OK.