RTS? RPG? Combat too?
Sounds like Kingdom Under Fire (RTS/RPG, hack and slash). Games that combine all these genres are rare. I'm hoping Dragon Commander allows us to fight in human form and if not, then it should allow us to land in dragon form and fight with tooth and claw, I can imagine the fun already!
You missed the turn based part.

In my experience it is common for fantasy themed turn based strategy (TBS) games to include some RPG elements. The only question is how extensive. Some include enough that when playing specially crafted scenarios / campaigns it could be considered a (simple) RPG. (Age of Wonders for instance)