This was a powerful air defence, posing a serious threat to attacking aircraft. Except for the battery on Vrijburgweg, all the others have been demolished. Even this surviving battery, however, has been heavily damaged; only two gun positions and a shelter bunker remain. Officially, it was known as the schwere Flak-Batterie Vlissingen-Nord.
During the inundation, the battery ended up in the water behind a hastily constructed embankment — a vulnerable position that a naval officer once described as looking like a stranded ship, an easy target for aircraft. Nevertheless, the battery remained active until the final days of the war. It supported the defenders of West Zeeuws-Vlaanderen, and on 28 October 1944 the battery was involved in shooting down a Lancaster bomber.