Royal Brunei Armed Forces Day is observed in Brunei every May 31 as a public holiday that celebrates the establishment of the Brunei Malay Regiment in 1961. This day marks the formation of the first military forces in Brunei, which transitioned to the Royal Brunei Malay Regiment in 1965. The regiment's structure evolved over the years, leading to the creation of the Royal Brunei Land Forces, Royal Brunei Air Force, and Royal Brunei Navy in 1972. The celebration commemorates Brunei's journey towards independence from British rule, which began after World War II and culminated in 1984. Activities on this day typically include ceremonies and events honoring the armed forces and their contributions to the nation's sovereignty.