This is clearly an example of a Japanese soldier, and it reminded me of a story that happened in Brazil.
After the end of World War II, an extremist group of Japanese immigrants began spreading the rumor that Japan had not lost the war. According to them, the news of the Japanese emperor's surrender in 1945 were lies spread by the Allies to undermine Japanese morale.
The belief of members of the nationalist group, called (Shindo Renmei), in their own version of reality was so strong that they murdered anyone who told the truth. The victims were other immigrants who accepted the fact that Japan had lost the war. Extremists called them "dirty hearts" and believed that they should be eliminated for the sake of love for the country. This really happened!
After the end of World War II, an extremist group of Japanese immigrants began spreading the rumor that Japan had not lost the war. According to them, the news of the Japanese emperor's surrender in 1945 were lies spread by the Allies to undermine Japanese morale.