Best Unit on the Walls

[Imperator Invictus]

I want you to share your knowledge on this forum about the best unit (for every faction) who can hold on the walls of important cities.

You think that axemen are better than swordsmen, or maybe falxmen are more effective on the walls???

But please, try to leave out the most expensive elite units.

I think that there must be units with high defense skills, without a charge bonus, because on the walls charge bonus is irrelevant.

Please post your factions most appropriate units of defending the walls.

Everyone who makes the faction - unit connections could consider that he has a balloon from me, because he deserves it..