 Manet played a prominent role in negotiations during the 2008 Cambodian-Thai stand-off.He became a lieutenant general in June 2013, and was later promoted to a four star general in July 2018 coinciding with his taking over responsibilities as the deputy commander-in-chief of the Royal Cambodian Armed Forces (RFAC).His younger brother, Hun Manith, also serves in the army, as brigadier general.