Lieutenant Himawan was a student of Batch I of the Military Academy at Yogyakarta, and briefly attended the Infantry Officer Advanced Course at Fort Benning, USA.

[3] In September 1948, Hinawan entered the Siliwangi Division, where he participated in defeating the Communist rebellion at Madiun, alongside a Student Army Company.

Major Himawan Soetanto took the initiative to lead Battalion 330/Kujang-1, with only 20% of its strength, managing to recapture Polewali, the center of dissident forces and successfully killing Lt. Col. Andi Selle.

Sutanto also participated in destroying one of the main forces of Darul Islam, led by Abdul Kahar Muzakkar in South Sulawesi.

They had four children, Purwanto Indrawan, Dwi Prihanti Indriani, Tri Susanti Indrayani and Cahyono Indrakusuma[6] Himawan Soetanto died at the Gatot Soebroto Army Hospital, Jakarta.