Complex sentence: Maturana participated in the Occupation of the Araucanía during the later stages of the Arauco War, was promoted to Brigade General in 1854 and Division General in 1865.
Split into simpler sentences: Maturana participated in the Occupation of the Araucanía during the later stages of the Arauco War. He was promoted to Brigade General in 1854 and Division General in 1865.