During WWII, Japanese kamikaze pilots flew manned suicide missions into military targets (e.g. ships), using planes filled with explosives. Soldiers and pilots were taught it was the only way to change the direction of the war (Japan losing), and they had to take part in this last resort. Very well trained pilots would volunteer to die, but towards the end of the war the military would have to recruit people and shun those who refuse
Kamikaze pilots were named after a typhoon that wiped out enemy ships in the 13th century, which has a link to nature being the true source of power. Japanese culture was very patriotic, and the military would focus on fighting and dying for your country, with the sentiment that it was better to be killed than be named a coward