Task Force 20 was a task force for the now-deactivated United States Second Fleet, as well as a now-inactive task force for the United States Fleet Forces Command. In its Second Fleet role, TF-20 served as that fleet's Battle Force. In its subsequent role in the Fleet Forces Command, TF-20 served in a training role for U.S. naval units preparing to deploy to the United States Sixth Fleet in the East Atlantic Ocean and Mediterranean Sea, as well as the United States Fifth Fleet in the Indian Ocean and the Persian Gulf.