Liu's wife was an agent working for Kenji Doihara, bringing many confidential documents with her on defecting to the Japanese.
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Yoshijirō Umezu (梅津美治郎), commander of the Japanese China Garrison Army and Kenji Doihara's (土肥原贤二) Japanese intelligence agency investigated and presented a memo to He Yingqing.
In the Kwantung Army of Imperial Japan for instance, the Three Crows refer to the Triumvirate of Army War College 24th class graduate Kenji Doihara, Army War College 28th class graduate Itagaki Seishiro and Army War College 30th class Military Sword Club member Kanji Ishiwara: the main masterminds of the Mukden Incident and the subsequent Invasion of China.
Kenji Miyazawa | Kenji Doihara | Kenji Ito | Kenji Sawada | Kenji Yoshino | Kenji Yamaoka | Kenji Ozawa | Kenji Osawa | Kenji Ogiwara | Kenji Nomura | Kenji Kosaka | Kenji Kodama | Kenji Kawakami | Kenji Kamiyama | Kenji Hatanaka | Kenji Haga |