1. To strike or raid against an enemy position: The army sortied against enemy forces with their aircraft.
2. To come out from a defensive position to make an attack: The special forces are currently sortieing terrorist forces in the mountains."
3. To take a short journey to a place where people have not been before, often with a particular purpose: Lynn sortied into the new fitness studio to see what the trainers have to offer.

During Tom's vacation in the national park, he sortied into the various attractive areas that were available there.