Thread:Cbird2796/@comment-4073118-20130717181509/@comment-4632427-20130719214911

So far, the new ones all appear in level 60 missions against the Rebels. The Marksman and Commando are also used in the Final Countdown as part of the Madman's formation.

I'm not sure how important it will be to note where they all appear in the long run. It looks likely that they'll become pretty common once 3.0 is released.