WO1 Rozain bin Haji Pungut was born on the 24th of September 1977. He was recruited in the Royal Brunei Armed Forces on 7 April 1995 for six months to undergo training. On 28 November 1995, he was assigned as a Rifleman to his first unit called C Company, First Battalion, Land Forces RBAF.
Throughout his career, he had undergone various courses such as 2IC Section Commander course on 29 December 1997 and promoted as Lance Corporal. In the following year, he also attended Drill Instructor Course in February 1999, Section Commander Course in 15 June 1998, Weapon Coaching and Instructor Course in 25 April 2001. He was later posted to Boys Wing in Training Institution on 19 July 2002 and achieved Corporal Rank on 20 June 2003. Other than that, he also attended Platoon Sergeant Course and began his career as Platoon Sergeant at C Company, First Battalion, Land Force RBAF. He was then promoted to Sergeant rank on 14 April 2007. On 14 January 2006, he attended Range Management Course in Small Arms Branch, School of Infantry, TI RBAF and was appointed as an Instructor. Subsequently, he was again selected to be an Instructor in Officer Cadet School, Defence Academy RBAF.
He became a Staff Sergeant on 26 November 2009. In 2012, he was selected as one of the members in Contingent to deploy with Malaysia Battalion for UNIFIL Operation in South Lebanon as a Troop Sergeant. He was again promoted as Warrant Officer on 1 July 2014 and was appointed as an Intake Senior Wing Sergeant Major. On 14 February 2018, he was promoted as School Sergeant Major in Officer Cadet School. Currently, he holds the responsibility of an Academy Sergeant Major in Defence Academy Royal Brunei Armed Forces.
He is married and blessed with five children. He enjoys playing golf and doing sports such as hiking and playing badminton.