Empire Total War- American Victory At Bunker Hill

So I was talking to some guys while playing a multiplayer battle in ETW and the discussion of how to beat the British on the Bunker Hill battle came up. Turns out none of us had been able to beat them, we assumed it was you&lose no matter what like in the actual battle. Long story short after many attempts I was successful in routing them! The reward was your victorious army occupies Boston and you keep surviving units for use in the game. Hazah! Pie for all I say. Running ETW on my personally built rig. Specs: Intel Q6600 OC to 3.00Ghz, GTX 260 216 Core w/ 512mb, 4GB of RAM running on Windows 7 Ultimate 64-bit.