Iwaichi Fujiwara (1908-1986)
As an IJA staff, he led a military intelligence team F-Kikan (Team Fujiwara) to organize the Indian National Army in Malaya from September to December 1941. He obeyed Indian lifestyle to get their trust.
As an Imperial GHQ's staff, Keiji Suzuki (1897-1967) led a military intelligence team Minami-Kikan (Team Minami) to train Burma's independence activists Aung San (Aung San Suu Kyi's father) and his 29 comrades in China from April to December 1941. With aid of IJA, Aung San formally organized the Burma Independence Army (BIA) in Thailand on December 28, 1941 to return to his country in triumph.
Colonel Keiji Suzuki (circa 1941)
* Rank looks Major General
There was also IJN's Hana-Kikan (Team Hana) led by Tomegoro Yoshizumi (1911-1947) in Indonesia circa 1942.
He seems being respected by Indonesians but details are unknown because he served as a civilian.
Koichi Tsukamoto (1920-1998)
Founder of Wacoal Holdings Corp.
Survivor of the Battle of Imphal.
He was a great entrepreneur in the postwar Japan but his family testifies that he suffered trauma which came from the battle he experienced. He sometimes abruptly talked to himself "Am I alive?" "Is this reality?" There would have been many such people at the time.