Why did titan and Zeus went against in a battle?

The titan Kronos found out in a prophecy that one of his children would remove him from power so whenever his wife had a child he would swallow it. Until his wife couldn't take it anymore and had he final child and hid him in a cave and gave a stone wrapped in cloth for Kronos to swallow while the child she hid(Zeus) grew strong and when he got older he slipped herbs into Kronos's food so he would throw up the children he ate(and since their all gods they cannot die). And Zeus teamed up with the other gods and fought the titans for rule.