Conversation so far:
can you tell me one of the bigger political activities of robert dale owen?
Owen served in the Ordnance Commission to supply the Union army.
what year?
1863.
when did it come to an end?
on March 16, 1863, he was appointed to the Freedman's Inquiry Commission.

Question: what else did he do in the political field?
Self-contained rewrite: Aside from serve in the Ordnance Commission, what else did Robert Dale Owen do in the political field?