Sisiutil
All Leader Challenger
Archers are also cheaper and aren't as vulnerable to Chariots. But I usually make Archery a low priority in the early game (unless I'm Protective, but then again, I hardly every choose to play an off-line game with that trait). So most of the time, like a4, I defend with Axemen and, if Chariots are threatening, with Spearmen too.