- Descend back to ground level and summon your mount.
- You will need to make your way over to the nearby military camp.
- Head to the East and follow along the road.
- This will bring to Beached Trireme Camp.
- Approach the camp from the Western side, so you are above the guard nearby the servant you need to rescue.
- Air Assassinate the guard and then move their body into the nearby bushes.
- At a minimum, you will want to head to the South and eliminate the 2 soldiers guarding the exit there.
- Slip behind the guards while they are looking South and eliminate them one at a time.
- Now, head back to where you dropped in and go over to the cage.
- Carry with the man inside after opening the door.
- With him in tow, head outside the Beached Trireme Camp.
- Carry him along the beach outside the camp until you are safely out of the camp.
- Set him down on the ground to continue.