Quote Originally Posted by Lusted
You need archers to be able to do that if you want them to be useful on walls. I modded the max angle down for archers in early versions of LTC, but put it back to normal when i realised how useless archers became in sieges.
Angle and Velocity are somewhat different though, although they both contribute to whether and at what rate projectiles can be fired into the sky.

Tweaked correctly, they could shoot into the sky only at certain rates, thus conserving ammunition.
Also, archers can shoot straight down at attackers from the walls if put in a deeper formation I found leaning towards the towers.