Maxperson
Morkus from Orkus
Level matters, or did in 1e. But again, Protection from Normal missiles ended that cold. In 2e any dragon of old or older was simply immune to normal missiles. 3e used magic weapons as the benchmark to hurt the older dragons.if a blade or crossbow in the hands of an adventurer can find a soft place to peirce the hide of a dragon why can't it find that place in the hands of a soldier? an assault from the soldiers has more attacks to potentially find a soft place to hit and more targets to surround and distract.
Put a magic bow in the hands of a soldier and he might get lucky and hurt the dragon. You aren't going to see very many town militias all armed with magic weapons, though.