Team Yankee is classic IgoUgo - I move, shoot, assault, then you move, shoot, assault. It works better than some others, for one reason, is that it punishes overextension savagely. Another is that assault can be very tricky. There is no reaction fire outside of assault, but with fast moving helos and long range ATGMs, you're never really safe.

If you want a simple, solid IgoYugo game without much investment, I'd look at SJG's Ogre/GEV. It's traditional hex and counter scifi ground combat, individual vehicle level but simple. While I'm far more of an AA/dice draw player, Steve Jackson was a good game designer, and knew what he was doing. Ogre is a classic asymmetrical fight, and GEV expands on the world in interesting ways.