I had the earliest iteration of this game engine, the Airborne Assault one concerned with Market Garden. It's real-time pausible with a top-down view. They then made Airbrone Assault Conquest of the Aegean, with Crete and some other med theatres. I like the engine, but I know it won't be for everyone. You issue a command to a company etc, and they will try and pick the best way to advance on a position. There is a lot of detail in each unit, in terms of equimpent and morale etc, but it's all shown with 2-D counters which may not appeal to everyone.
I'll be getting it along with Conquest of the Aegean, as I enjoyed the first game.