AWA424 - How did ancient artillery suppress defenders during sieges?

Demetrios asks, "Hello Mr. Dahm, Regarding ancient artillery, in certain cases such as Josephus' account of the siege of Jotapata during the Jewish Revolt, artillery seems to be very effective in suppressing the defenders and in a sort of anti-personnel role. Due to the slow firing torsion engines of the time, how was this possible? Wouldn't a much higher rate of fire be necessary for such a role? Additionally, were artillery crewmen seen as civilian or military personnel by commanders and how were artillerymen recruited and trained? Thank you again for running AWA, it is wonderful to listen to."   Join us on Patreon patreon.com/ancientwarfarepodcast