https://en.wikipedia.org/wiki/Japanese_intervention_in_Siberia
Known as
西伯利亜出征/Siberia expedition
or
シベリア出兵 /Siberian Intervention
or
シベリア事變 /Siberian affairs
Badges and watch fobs
https://asiamedals.info/threads/badges-and-watch-fobs-of-siberia-expedition.13567/
siberia expedition history
siberia expedition in photographs
siberia expedition in photos
siberia intervention in photographs
siberian intervention
シベリア出征
シベリア出征記念