Because Sauron had been gone for over three millennia, life at the Black Gate was usually uneventful, and Talion would often pass the time taking care of his family and sparring with his son.
He killed a nobleman in defense of his wife, and instead of being executed was appointed to the Black Gate as a punishment by a sympathetic judge. At some point after marrying Ioreth and fathering a son, Dirhael, he joined the Rangers of Gondor, quickly rising through the ranks to become captain.