Possible to reduce the attack range of range units?

So I wanted to conquer my neighbor Elizabeth, but for some reason my crossbowmans and cannons were reduced in attack range. Kinda hard to win battles if my shooters had ranges of 1 while English Longbowmans had ranges of 3. All my units were picked up with relative ease.


By the way, what is the best way to use the citadel as an offensive tactic?

Your units were trying to fire over an obstructing tile. Ranged units cannot shoot over forest or hills unless they're on hills themselves. Nothing can shoot over mountains or forests on hills unless it has the Indirect Fire promotion.