Research priorities

[Zarky]

I'm not too sure about Heaven and Earth. Extra ammo is nice, but it seems that 90% of my battles end before archers can expend all their ammunition in the first place. Maybe I need to work commanding archers better.

For me arrows usually become a problem in late-game large castle siege defenses (which happen to me a lot after RD) where there is plenty to shoot and less need to back away from the walls. I research H&E for the replenishment bonus and encampment, if it was just the arrows I'd skip it until turn 80 or so.