Conversation so far:
Who crossed the alps and invaded italy with an army of elephants during the second punic war
Hannibal made his famous military exploit of carrying war to Italy by crossing the Alps with his African elephants.
when did hannibal live
Hannibal was born in 247 BC and lived during a period of great tension in the western Mediterranean Basin.

Question: what is the commander known for
Self-contained rewrite: what is hannibal known for