If you never heard of this game, you need to keep up on your gaming news
. What's not to be intrigued about enormous maps with up to 500 units per player, gigantic units and even bigger explosions 
.Here's a quote from the recent PC Gamer:
QUOTE(PC Gamer @ March 2007, p.023)
[...] SupCom goes like this: Your Armored Command Unit (ACU) dramatically teleports in, constructs a base, and raises a huge robot army to wage war over land, sea, and air. Your ACU is roughly equivalent to the king in chess--powerful and versatile, but also slow and vulnerable--and if you lose him, it's Game Over. That chess-like game element significantly changes the standard (and somewhat tired) RTS gameplay formula for the better by forcing you to defend a high-priority target, but it just scratches the surfcace of what SupCom has to offer. Oh, and when an ACU dies, he explodes like a nuke. You don't usually see that in chess.
Here's the gamedaily.com link (which is always extremely fast downloads for me)
Here's the gamespot link (which I first used, but was going extremely slow).
might check it out if i can find some time