Sir Charles Peers prepared the guidebooks for two of the Saxon Shore forts that had been reused as medieval castles: Portchester Castle in Hampshire and Pevensey Castle in Sussex.
The guide is divided into two main sections: history and description. There is a foldout plan inside the back cover. Peers describes the nature of the Saxon Shore forts and some of their reuse. He continues with the granting of the site to the half-brother of William the Conqueror.
Peers notes the use of the fort during the Second World War including the insertion of pill-boxes and a blockhouse to protect against tanks: ‘By the grace of God these twentieth-century defences were never put to the test’.