Originally Posted by
Furgon
Champion's drill ability is 50 without additional traits I think, so Drillmaster is probably not worth it.
Also, if I'm not mistaken, I usually need something around 150-200 kills to get the first rank, so you can scale from there. Practically, It's nothing difficult to achieve a 1-2 silver chevron with infantry, then it gets trickier as experience is lost proportionally with unit casualties. One of the tips can be to let your infantry chase what they can, after enemy army is broken, as there is no problem to level cavalry in the same way.