Michiels entered military service at age 17 years, participated in the
Battle of Waterloo, and in 1817 went to the island of
Java, where he was directly involved in the conflict in
Cirebon. On 29 August 1818 he was promoted to captain. He fought in the
Java War as a colonel commandant. On 22 November 1828,
King William I appointed Michiels a knight and officer in the
Military William Order, one year before he was appointed as a major. In the years 1831 and 1832, he participated in the conquest of Narras and Kottiangan, in 1832, he led an expedition against the
Jambi Sultanate; the month of May in that year he was appointed lieutenant-colonel and in November he was awarded a knighthood in the
Order of the Netherlands Lion. He led the raid on
Bonjol and under his leadership he was able to take it. For his success, he was promoted to colonel on 3 October 1837. Under his leadership, in 1838 he conquered
Kuta, and in 1840 overpowered
Barus, Tapoes and
Singkil, in 1841 he suppressed a rebellion in Batipo and in 1844 and 1845, a general attack was launched. Michiels also received the honor of the Dutch people for the achievement. In 1841, he was appointed as an aide in the special service of kings and commanders of the
Military William Order. In 1843, Michiels obtained the rank of major general. == Governor of West Coast of Sumatra ==