Kammala jumla mai zuwa: A lokacin mamayar Jafananci na Dutch East Indies, an gudanar da daukar ma'aikata ga Jami'an Sojojin Ruwa na Jafananci (IJN) a Medan. Nasution ya shiga cikin shirin daukar ma'aikata, kuma ya sami ilimin ruwa a Bandung da Kyoto. Daga karshe an ba shi mukamin Laftanar kuma ya zama mai kula da jirgin ruwa a cikin jirgin Haraokamaru a 1944. Ya shiga cikin Pacific Theater kuma ya yi yaƙi da sojojin Amurka a cikin
Yaƙin neman zaɓe a tsibirin Solomon da kuma kamfen a Philippines. A lokacin yakin teku a Philippines, an buga jirginsa kuma ya kama wuta. Nasution ya ji rauni kuma kusan ya mutu.