What secret OSS operation parachuted agents directly into mainland Japan to prepare for a possible Allied invasion?
Answer
Operation Balsam — OSS operatives were infiltrated into Japan in the final months of the war through neutral intermediaries
Did You Know?
The OSS ran extremely dangerous operations into Japan proper. Some agents were inserted via submarine or through neutral countries. The atomic bombing made a full invasion unnecessary, but the groundwork had been laid for what would have been the most dangerous spy mission of the war.