How was siege weapons used in the Roman Empire and what was the strategy in utilizing them? | AskHistorians Archive Observer

How was siege weapons used in the Roman Empire and what was the strategy in utilizing them?

by TheAustroHungarian1

Also how did the Romans incorporate ballistas and catapults in their strategy?

Iguana_on_a_stick

I answered this question a while back: https://www.reddit.com/r/AskHistorians/comments/4glfrx/how_often_would_roman_siege_weapons_like_onagers/d2j6kax/