Bragging time eh?
I used to play RTW so much that i dominated the whole map several times, and ended up playing without saving and loading and still won all major battles. My most significant battle was when my 2.5k army defeated their 8k army (I think in that Barbarian Expansion) in open battle. Got like 900 men left by the end of it and 1/3 of my generals died. But after that my army cut through their regions unopposedly, like hot knife through butter
But to be fair, i couldn't play the hardest mode through. They reduced the army morale down so much that even the elite unit can't hold up for tactical charge. Stopped playing a long while, and no longer can do it now through as the control getting kinda annoyed when you start to get used to Shogun 2