The Cheapest Trick in the Book!

[Executor]

Originally Posted by AreaOfEffect

I'm personally not a big fan of the whole choke point thing by the way. In most cases I'd rather out maneuver my opponent then hold him in some Mexican standoff. That's why my castles are more likely to guard magic sites then they are to guard a worthless canyon. If an opponent uses castles at choke points against me and the castle doesn't protect anything worthwhile, I generally move on. It always surprises them that I don't behave exactly like the AI.

If you're being double, triple, 5 vs 1 teamed ( ), it's best to sit back in your forts and wait until the enemy tries to storm you. After that, you make a counter offansive.
Or/and hold the line on one side, while eliminating the weakest enemy on the other side. Always try and concentrate all the fire power you can spare on one single enemy.
Works best from my experience, and I had a lot of those situation.