[2] In October 1943, the Japanese established a militia, PETA (Indonesian: Pembela Tanah Air, lit.

In the early hours of 14 February 1945, rebels attacked Japanese troops, causing heavy casualties.

[5] On 19 August 1945, in a government decree issued by the newly independent Indonesia, Supriyadi was named Minister for Public Security in the Presidential Cabinet.

Ronomejo a kamituwo of Ngliman village in Nganjuk reportedly accompanied Supriyadi to his hiding place in a cave near Sedudo waterfall.

According to M. Nakajima, director of Taisei International Corporation, Supriyadi and his two companions stayed for a day in his place in Salatiga around February and March 1945, but then left before Kenpeitai from Semarang arrived.