I'm trying to gather information on Jasper Charles and his regiment.

Here is what I know about him:
Regiment: 6th Regiment, Missouri State Militia Cavalry
Side: Union:
Company: D
Private in, private out
Alternate name: Joseph C./Thompson-However, everything I have seen had Jasper or Charles on it.

He married Olive Jane Brown in Audrain Co in 1870 and he died in Florida 1915.
1880 Census is in Montgomery Co, MO and 1890 Jasper Co, MO.

Any help on him or his regiment will be greatly appreciated!

William