In 1941 he was sent with Tagarab to arrest the leaders of the Kukuaik Cargo Cult on
Karkar Island. One of the men arrested prophesied the bombing of
Madang and the arrival of a Japanese army with cargo for the people. When the bombing took place soon afterwards, Yali was impressed by the man's visionary abilities. Yali remained loyal to the Australian Administration throughout the war, and saw action against the
Japanese army in 1942. He was promoted to Sergeant of Police and sent for six months training in
Queensland, Australia. The differences between Australian and Papuan society made a big impression on Yali – the wide roads, vast agricultural production and emphasis on hygiene and cleanliness impressed him, even making him feel ashamed for the deficiencies of his own culture and society. In 1944, Yali went with
a coast-watching party to
Hollandia, but the landing party was ambushed by the Japanese and Yali escaped with Sgt. Buka, a
Manus native, into the jungle. Yali managed to walk all the way to
Aitape with the use of a compass and a rifle with 50 rounds. Sgt. Buka became ill and was lost in the jungle. The total distance was 120 miles and took Yali 3 months to walk. Yali's experiences during the war reinforced his belief in the efficacy of the traditional pagan religious system. "Yali and Buka found a crocodile. Buka at once wanted to shoot it for food. Yali, however, remarked that it was odd that there should be a crocodile in the bush with no river nearby. It was probably, he said, a local deity and they had better respect it as such." Buka eventually persuaded Yali to shoot it and, Yali claimed, it became dark and wild animals surrounded them. They threw the meat away and Buka, believing that the local gods would punish him for shooting the crocodile, became very ill. Yali and Buka became separated and Buka was lost in the jungle. In 1944–45, Yali was again drafted back to
Brisbane, seeing a zoo and other aspects of Western society. However, because he was illiterate and could not speak English well, he could not discuss what he saw and did not develop a complex or complete understanding of how Western society worked, according to Lawrence. Because of his faith in the integrity of Europeans he knew, he took at face value Australian promises of economic assistance in reward for helping the
Allies. He also visited the
Queensland Museum where he saw ethnographic exhibits of old Papuan pagan religious relics. He started to consider why Europeans obviously valued these items, and "he adopted a flexible attitude towards Christianity and paganism: each had a legitimate place in the scheme of things he saw". ==After the war==