Starting education at Hollandsch Inlandsche School, continuing to Meer Uitgebreid Lager Onderwijs, and Algemene Middelbare School, in Yogyakarta,[1] after graduating in 1941, continued his education at the Dutch royal military academy in Bandung, but did not graduate as the Japanese invaded.

[5] In the early hours of the morning of 1 October 1965, Soeprapto was not able to sleep due to a toothache, instead he was painting a picture he was working on.

He asked for permission to change his clothes, but was refused, and Soeprapto was taken by truck to Lubang Buaya, the movement's base on the southern outskirts of Jakarta.

[6] His wife was awakened by the family's dogs barking and came into the living room but was forced back by her husband's captors.

[7] Later that night, Soeprapto was shot to death along with other members of the Army general staff who had survived their kidnapping attempts.