Complex sentence: He succeeded Lim Kim Choon as the Chief of Air Force on 24 March 2006 and relinquished this appointment to his second brother, Ng Chee Meng, on 10 December 2009.
Split into simpler sentences: He succeeded Lim Kim Choon as the Chief of Air Force on 24 March 2006. He relinquished his position as the Chief of Air Force to his second brother, Ng Chee Meng, on 10 December 2009.