The average Japanese pilot was heavily indoctrinated and very culturally isolated. Even the Japanese High Command was under the belief that if they could cripple the American Fleet (including Aircraft Carriers) that the USA would sue for Peace.
Would a Korean Soldier worry about the geopolitical ramifications of his action in shooting South Korean Soldiers?
I have read some on WWII (honest Injun) but I must have speedread the section on Pearl Harbor.