The fifth Aomori Regiment recorded that the temperature in the mountain on which the troop got lost was lower than -20 degrees Celsius, though it's not clear because the hospital corpsman who was in charge of observations died before leaving a record.
行軍隊の遭難した山中の気温は、観測係であった看護兵が記録も残せず死亡したため定かでないが、-20℃以下だったとの推測を青森5連隊が報告書の中で残している。