Keywords: US 4 inch Mk 9 gun Fremantle 1943 AWM 028993.jpeg AWM caption FREMANTLE AUSTRALIA 1943-01-21 CLOSE UP OF AMERICAN 4 INCH GUN FREMANTLE FIXED DEFENCES 028993 1943-01-21 photographer not identified Copyright expired - public domain PD-AustraliaGov 4 /50 caliber gun Fremantle Fortress Black and white photographs |