During WW2, the Western Australian port of Fremantle was host to over 170 US, British and Dutch Submarines who conducted 416 war patrols between March 1942 and August 1945. This episode of Backyard Battlefields is an interview with Lynne Cairns, author of ‘Secret Fleets: Fremantles World War 2 Submarine Base. (Image copyright WA Maritime Museum)
