The "Aachen" Battery was connected by infantry defence-works to the next or "Antwerpen" Battery, situated on top of the dune. The latter comprised four 4in. guns in armoured turrets, with sand-covered concrete shelters behind. In front, on the dike, are machine-gun emplacements.
The "Beseler" Battery, next reached, comprises four 6in. guns on concrete platforms, with circular armour-plate protection. On each side two elevated emplacements served as telemetric and observation-posts.
Further on is a large infantry entrenchment, with a shelter on the dike for the searchlight, and an emplacement on either side for machine-guns or small calibre artillery.
One of the Beseler Battery's guns.
One of the Cecilia Battery's guns.
The Cecilia Battery, photographed from an aeroplane at 13,000 feet, in July, 1916.