In the city, staying in hostels Soepeno Assembly of Students Indonesia (RMIC) in Jalan Cikini Raya 71.

When the Dutch invaded Indonesia on 19 December 1948, the Minister of Youth and Supeno RI Development.

Supeno joined a guerrilla force, while the Dutch soldiers continue to track him down.

[3] Several months after joining the guerrilla, Supeno and his party were finally caught at Ganter Village, Nganjuk, when the Dutch invaded the territory on the 24 February 1949.

When he stayed firm, without fear in his eyes, they pulled the trigger and executed him on the spot, along with six other members of the guerrilla.