Rubuta ci gaba don wannan sakin layi - A cikin 1943 Serong ya yi aiki a matsayin Babban Jami'in Babban Jami'in 2 tare da Rukunin 6th da 7th a kan Atherton Tableland a Far North Queensland, inda suke hutawa da sake horarwa kafin gudanar da ƙarin ayyukan. A farkon 1944 ya koyar da darasin ma'aikata a Cabarlah. A watan Agusta, ya koma Aitape don shirya don turawa na 6th Division. Daga bisani an haɗa shi da sojojin Amurka don saukowa a tsibirin Morotai.
a cikin Netherlands East Indies a tsakiyar watan Satumba 1944. A cikin 'yan makonnin da suka gabata na yaƙin, an ambaci Serong a cikin wasiku don ayyukansa na yaƙi da Jafananci a Wewak, yayin da yake aiki tare da sojoji a cikin Bataliya ta 35. A yayin wani lamari a ranar 21 ga Yuli, 1945, ya jagoranci rundunar sojoji uku da 'yan sanda na gida a kan sintiri don halakar da wani makami na makamai na Japan. Kodayake yana aiki da yawa a cikin horo fiye da na yaƙi, a lokacin yaƙin Serong ya sami mahimman lambobin sadarwa waɗanda daga baya zai yi aiki tare da su a cikin ayyukan gaba, gami da Kanar Reg Pollard, wanda ya zama Shugaban Babban Jami'in (CGS), da Kanar Charles Spry, daga baya Daraktan Leƙen Asirin Soja da Babban Daraktan Hukumar Leken Asiri ta Australiya (ASIO).