Keywords: Madsen M31 20mm automatic gun AA on naval mount in Aalborg Forsvars- og Garnisonsmuseum, pic1.JPG Photographed at Aalborg Denmark own 2013-06-13 11 41 37 Alf van Beem CC-Zero Aalborg Forsvars- og Garnisonsmuseum 20 mm Madsen Military related photographs by Alf van Beem |