Obviously some few survived, because word ggot back to Rome quickly, given the distance and technology of the time. Arminius didn't fare so well when he had to face the Romans again, and after he fled with the clothes on his back, he hid out with some relatives who eventually sold his head to the Romans.
Well, no good deed goes unpunished. I understand that both Hannibal and Scipio Africanus were banished and/or persecuted in retirement.