MobiusArcher: Its a sci-fi mil sim where you command a big space battleship, and all its assets. Its very clunky and unpolished, but there are no other games quite like it. If you want you can fight a space battle, then launch missles at an enemy base on the planet. Then enter the atmosphere of the planet, and attack the base directly. You can get in one of your fighters and engage in air combat over the base. then you could land, and get out of your fighter, and fight on foot along side your forces. At least I think thats how it works. I can never figure out how to play, so im just going by what I have read.
Interesting. Reminds me a bit of Urban Assault, but that only had the "direct command" aspect.