One of my favorite RTS games that ive ever played, and ironicly one of the first.
The shear amound of cusomization on tanks/vtols/hovercraft is insaine. A choice of body,tracks and up to two weapons on your vehicle. but honestly the story is cheesy. But thats forgivible for a game from 1999. The comunity has had to keep the game alive since then,even going so far as to keep the skirmish games open for the comunity,mod support,and frequent-ish updates.
To anyone reading this,give the game a try! You might like it too!