It is believed that mobilizing Taiwan's Aborigines to fight was the brainchild of Japanese staff officer General Wachi Takaji. He was confident that if Taiwan's Aborigines, who had proved their valor during the Wushe Incident, could be recruited, they would contribute a great deal to the Japanese army's cause.
一般認為，動員台灣原住民參戰的構想，出自日軍參謀和知鷹二，他認為在霧社事件中台灣原住民表現英勇，如能徵召參戰，必能對日軍做出貢獻。