A question

I've seen this film twice now, but feel that I don't fully understand all that occurred.

That German Abwerh chap - I don't remember his name - whom Flame couldn't shoot the first time he encountered but whom Citron shot later. Was the hit ordered by Hoffman, the Gestapo chief via Flame and Citron's boss? The Abwerh man was probably an anti-Nazi, since the Abwehr was apparently riddled with anti-Nazis, including the organization's chief, i.e. Canaris. There's a motive, therefore, for having him bumped off. Also, this might explain why Flame and Citron and their associates were able to hang out in the same cafe/bar that Hoffman and his chums hung out.