 In the early hours of 21 June a force of about 50 Japanese troops slipped out of the Pocket and attempted to attack Australian positions on Labuan . Different groups of Japanese troops attacked a prisoner of war enclosure , dock facilities and No. 1 Strip , but all were defeated by Australian and American logistics personnel and engineers . A total of 32 Japanese personnel were killed around Victoria , and another 11 were killed at the airfield . Three Americans and two Australians were killed in these engagements . 
