Rare group photo. It seems they are wearing Type 1930 army sun helmet. Details.
#2 Japanese troops with type 1938 army sun helmets, part of the first contingent of reinforcements sent under the Franco-Japanese Joint Defense Protocol, await orders to advance, near Saigon, French Indochina, 1 October 1941.
Japanese troops with type 1938 army sun helmets, part of the first contingent of reinforcements sent under the Franco-Japanese Joint Defense Protocol, await orders to advance, near Saigon, French Indochina, 1 October 1941.
#6 Japanese Army Pilot badge https://asiamedals.info/threads/japanese-army-pilot-badge-in-photos.26049