Hammer & Anvil:
Stun a force, then take it out with assault forces.
A good example is sending in annoying units like assaults and skirmishers to force the opponent's forces into a bad position.
Then the raiders do the good job
Blitzkrieg:
Move swiftly before the enemy retaliates.
That's right, germans were the original cheesers. Who knows? Maybe there were more cheesers before that.
Leapfrogging:
Avoid the big defenses, focus on the small islands.
Guerilla warfare:
Using few well-positioned units that are annoying to deal with, and might be useless to fight against. Mines, cheap tanks, anything to waste the opponent's time.
My favorite strategy