Conversation so far:
what did Edward Canby do in the military?
Edward Canby was United States Army officer and a Union general in the American Civil War.
What part of the military was Edward Canby in?
Edward Canby was in the United States Army.
Was Edward Canby in the United States Army?
Edward Canby was a United States Army officer.

Question: Anything else about his military career you can share?
Self-contained rewrite: Anything else about Edward Canby's military career you can share?