Ka cika wannan magana: A farkon Yaƙin Pacific, Jafananci sun sauka a arewa maso yammacin Borneo kuma sun kama muhimman wuraren mai na yankin, wanda ya soma ba da gudummawa ga ƙoƙarce-ƙoƙarcen yaƙinsu a shekara ta 1943. Ƙoƙarin Allied don hana kwararar man fetur ya iyakance ga yawan hare-haren jiragen sama a lokacin da ake ciki yayin da kokarin da Allied ya yi a kan kasar Philippines. Duk da haka, a ƙarshen 1944 <unk> farkon 1945 Allies sun fara shirin ayyukan don dawo da yankin. Ayyukan Allied don sake kamawa
An shirya Labuan da Brunei Bay don tsakiyar Yuni 1945. Don tallafawa wannan, An ƙaddamar da Operation Agas a watan Maris na shekarar 1945 ta Ma'aikatar Binciken Sabis na Australiya (SRD), ta amfani da ma'aikatan Specialungiyar Musamman ta Z. Wannan aikin yana da manyan manufofi guda biyu: don tattara bayanan sirri da kuma horar da 'yan asalin ƙasar don gudanar da yakin basasa a kan Jafananci. Daga baya, an gudanar da jerin ayyuka guda biyar a yankunan da Japan ta mamaye na Arewacin Borneo a cikin matakan karshe na yakin karkashin jagorancin Operation Agas <unk> kalmar Malay don sandfly <unk> wanda aka gudanar tare da Operation Semut a Sarawak. Sojojin Japan da ke mamaye arewacin Borneo a wancan lokacin sun fito ne daga Rundunar Soji ta 37.