​​The German occupiers named this fort Stützpunkt Hendrik, and built many bunkers around it. After the war, all bunkers have been demolished except for one machine-gun bunker. Composed of an armoured cupola with six embrasures, it is the only intact bunker of this type in the entire Atlantic Wall.

On 11 and 12 October 1944, as part of the Battle of the Scheldt, the fort was attacked by over two hundred Royal Air Force bombers, turning it into a lunar landscape. The bunkers, however, sustained hardly any damage. On 25 October 1944, after heavy fighting and shelling, the fort was captured by the Allies forces. Today, the Fort Frederik Hendrik has been transformed into a holiday park.