Dai Nippon Aviation Youth Corps / Greater Japan Aviation Youth Corps / 大日本航空青少年隊 was established in May 1941 under the Dainippon Seinendan /Great Japan Youth League/ 大日本青少年団
See also https://asiamedals.info/forums/youth-league-seinen-dan-badges.618/
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大日本航空 - Greater Japan...