Most kills by a single unit.

[troymclure]

As the topic says, gentleman please start your computers and break out your screenshots. I'll start the show with this...
https://img241.imageshack.us/my.php?...pult516fg7.jpg

516 kills for one catapult. In case i did the link wrong ;).

[Darius]

516 kills and they get -8 xp? What did they doto deserve that, get drunk mid battle and shoot themselves from it?

[Tempiic]

lots of friendly kills?

[Darius]

Stats show only two friendly fire kills occured, and it may not have even been them!

[Vicarious]

-8 xp is because they got killed. They probably had 8 xp when they lived, but dead people don't have any xp. Hence: -8 xp.

[Bullethead]

Especially in the early part of the game, it's quite possible for a general to get 500-600 kills if you let it happen. The general will have all these stars and some upgrades and experience, and the enemy troops are cheap spearmen, peasant archers, and such. Often, the general's entire bodyguard will die and it's just him alone doing all that killing. This can be a real nightmare.... Hope you had a recent save before this happened :D