This game came out on PC, it was fully integrated with the MS sidewinder force feedback joystick (i don't recall if it was V1 or V2) so it would have been '97-98. it may even have been bundled, because i can't imagine my parents buying it otherwise.
it was set in a post apocalyptic world where aliens had invaded and the remains of humanity had fractured. you play the last good guy commander and you have to conquer europe(?), first fighting the humans and then the aliens. i remember one of the humans had tanks that looked like ww1 british tanks but i want to say were some of the hardest human enemies.
gameplay wise it was an RTS/vehicle control hybrid. You'd pick a region to invade, then go to an RTS interface in which both sides had a home base. you'd then harvest resources, create units and send your vehicles around, but when they met the enemy you needed to jump into an individual unit and shoot stuff because your controlled unit became much stronger. the end goal was to destroy the enemy base, then rinse and repeat. i'd love to see if i can download it and find out if it was very hard, very broken or if i was just a garbage child who sucked at it