He was staff officer in Brigade III of the Siliwangi Division and served as an aide to General Oerip Soemohardjo.

He was appointed to lead Territory VII which was headquartered in Makassar with the rank of Lieutenant Colonel.

In August 1950 Territory VII was changed to Kodam VII/Wirabuana and Lt. Col. A. Y. Mokoginta was replaced with commander Alexander Evert Kawilarang.

[2] He was the first SSKAD Commander from 1951 to 1953 and team leader of the Army Doctrine Committee, formulating the TNI's ideology in order to deal with infiltration from foreign powers and interference from within the country.

[1] Retiring from the Armed Forces, he became Indonesia ambassador to Sudan and Morocco, from 1967 to 1970 and signed the petition of 50, criticizing the New Order government of Suharto.