I really like that one, it's a unique mix of arcade and RTS - it's not perfect, but worth playing for sure. I still have it on CD. We can command our units from the map or take over one of them and control it directly. AI leaves a lot to be desired but it was so fun, really. Very interesting game.
In campaign mode, World Wide War Web, we conquer virtual representations of countries/continents - we start from Africa and end on Russia. We could call in airstrikes and supply drops, even drones for recon. After defeating each of the countries, we receive some of its units as a reward to conquer the next one.
In Instant mode we need to destroy several units or buildings and find exit - our time is limited.
Although there was little content in Internet about this game, I've recently recorded all missions from World Wide War Web and Instant mode. Won't provide the link here, but you can find it on youtube.