In May 2010, Prince Mateen was admitted to the Commissioning Course for Regular Army Officers along with 200 recruits in Royal Military Academy Sandhurst.
Hassanal Bolkiah | Sabir Mateen | Mateen Cleaves | Kebawah Duli Yang Maha Mulia Sultan Haji Hassanal Bolkiah Mu'izzaddin Waddaulah |