Here we see the typical gate way with towers. You may ask "Where are the gate?" For marching camps the Romans would not use gates. Instead
each gate would have a detachment assigned to guard the gate ways. In case of attack the detachment would stand in the gate way creating a human gate.. Now in a
winter camp under siege as we read in Caesar's Commentaries, the gate ways could be blocked up with portable fences or completely blocked up with earth or logs. In any case there is a part of the gate defenses we have not examined. That is the revelin or tulmus. This is a small wall erected directly in front of the gate way. This was identical to the rampart walls, just lower in height. This could be free standing or be L shaped running directly from one side of the rampart or another. In the former, the gateway would have two points of entrance and exit. In this last case the tulmus would provide only one entrance way, being either on the right or left of the actual rampart portal.