[3] After working in the China Group of the General Staff Headquarters, he became an assistant to the Harbin Special Affairs Agency .

He was involved in craft activities such as Masahiko Amakasu's goal to destabilize Manchuria and expand the power of the Imperial Japanese Army.

A few days after the Liutiaohu Incident [ja], his wife, Akiko, witnessed the scene where Amakura, who visited the official residence in Miyazaki, exploded a grenade as a false flag operation on her way home.

After returning to the inland of the unit, he was promoted to Lieutenant Colonel and became the Chief of the Cryptography Group, China Division, General Staff Headquarters.

The ceasefire was decided in this state, but Miyazaki gathered soldiers with experience in masonry and buried more than a dozen stone monuments along the front line.

Miyazaki was sent to Burma along with the 58th Infantry Regiment attached to the brigade due to the worsening war situation in the south, and he was supplemented by the 31st Division under the command of Kōtoku Satō.

After that, the Miyazaki Detachment stubbornly resisted the Kohima recapture operation carried out by the British Army with two divisions, but suffered great damage without receiving support from other units of the 31st Division, and the number of troops was three minutes of the initial number.

If you can endure for a month on the road, it would be a world record!He encouraged the soldiers and boosted their morale, but on the 17th day, their defenses were finally breached by a British tank at Karon, and the supply line to Imphal was regained.

[3] The Miyazaki Detachment, which was surrounded by British troops in the mountainous area to the east of the highway, was finally ordered to withdraw from the military headquarters.

Minoru Murata (Lt. Col., Chief of Staff of the 54th Division), who visited the site just before his death, said that Miyazaki had repeatedly said, "Did you definitely take control of the unit that was separated by breaking through the enemy?