He then attended officer school prior to being sent to Asia. As an officer, Visser attended paratrooper school in India and intended to join other allied forces in Asia to fight Japan forces in Dutch East Indies. However, Japan was surrendered before Visser was sent to the Dutch East Indies. Visser was assigned to be an instructor in a Dutch special forces school in India known as School Opleiding Parachutisten /SOP. The school was later moved to Jakarta in 1946 and then moved again to Hollandia. Visser grew to like living in the Dutch East Indies, and asked his wife and his sons and daughters to remain with him in the Dutch East Indies. When his wife refused, he opted for divorce. By the time he returned in 1947, the school had already moved to Cimahi, Bandung and Visser was promoted to Captain. During 1947 - 1949, the paratrooper school led by Captain Visser continued to educate elite paratroopers until transfer of power to Indonesia. Captain Visser then opted to stay in Indonesia as a civilian, moving to Bandung, working as a flower farmer di Pacet, Lembang, embrace Islam, marry his Sundanesse lover and change his name to be Mochammad Idjon Djanbi.
On 15 April 1952, ColonelAlexander Evert Kawilarang began to form Kesatuan Komando Tentara Territorium III/Siliwangi, the early name of Kopassus and the basis for this historic special forces unit. Not long after, Colonel Kawilarang with the use of military intelligence located and met with Visser who had remained a peaceful and law-abiding citizen in newly independent Indonesia, settled in West Java, married an Indonesian woman, and was known locally as Mochammad Idjon Djanbi. He was the first recruit for the Army special forces and given the rank of major, as well as its first commander. Due to him, the unit which later became Kopassus wear red berets instead of the distinctive green beret. In 1956, with increasing combat capability of special forces, Army leadership saw opportunity to place the unit under the hands of indigenous officers. Due to lack in tact, this angered Djanbi and cause him to resigned his position as commander. Later he was given position at a plantation as a result of the nationalization of a number of foreign-owned plantation. Prior to his retirement in 1969, he was promoted to be lieutenant colonel at the special force anniversary.