Are you playing 1.2? Using diplomats as shock troops, lol.

I did that a lot in 1.0 and 1.1 but not so any more. The hapless AI often have nearly full captain-led stacks running around which are perfect prey.

That's a lot of armies. Guess you must have conquered fast and furious. How much upkeep does all of that cost?

I've never maintained more than 5 armies in my games but then again, I don't go for much of a blazing speed endgame.