1. The Notitia Dignitatum lists nine forts under the command of the Count of the Saxon Shore. Three of the forts were constructed early in the third century AD - Brancaster, Caister and Reculver - and confirmed to traditional Roman military design, i.e. based on a 'playing card' shape. The reminder were constructed in the latter part of the third century and were defined by thicker/taller walls, semi-circular bastions and irregular layouts. The forts of the latter group were: Bradwell, Burgh, Dover, Lympne, Pevensey, Portchester and Richborough.