"28.0" . . . . . . . "March\u2013September 1943 (major work completed)" . "Watten bunker" . . . . . . . . "Blockhaus d'\u00C9perlecques" . "Watten" . . . . . . . . "the V-2 ballistic missile launching site at Watten" . . . . "Blockhaus d'\u00C9perlecques" . .