Hy, im new player (2 days).
When AI attack me with artillery, i send my infantries, it was kinda weird, my units only swing their weapon in the air, i was thinking bug.
Then i found that these type unit only get damage by Cavalry
(https://0ad.fandom.com/wiki/Bolt_Shooter and https://0ad.fandom.com/wiki/Siege_Catapult)
I knows the acts for swinging weapon into air is for take over building or artillery, but why its more hard to destroy the artillery, than artillery destroy buildings.
so, i make my account here to submit ideas:
Any units can damaging artilleries
or
Artillery is great as destroyer, but make it most vulnerable unit based on the type, for example siege catapult or bolt shooter, you can just kill the operator.