I added the category for the 6th Indiana Militia and a sticker. The FamilySearch record listed his time of service from April to June of 1812. It is possible that he was transferred to the Army of the Northwest after this period. I don't have access to the unfold record you cite, but it might mention it there if that is the case. In any event, something worth further exploring.
If we could find a source indicating he was part of the Army of the Northwest, we could also add that category, although currently, I don't know he was.