Fra en alder av 13 år må alle mannlige singaporeanske statsborgere og alle menn med permanent oppholdstillatelse søke om utreisetillatelse for å reise utenfor Singapore i tre måneder eller mer. Ved 16 ½ år må de registrere seg for verneplikten.<ref>[https://assets.publishing.service.gov.uk/media/60ebe437d3bf7f568cde90ba/National_Service.pdf "Are you or your children dual nationals or Permanent Residents in Singapore?2nd People's Defence Force3rd Singapore Division6th Singapore Division9th Singapore Division21st Singapore Division25th Singapore DivisionArmy Deployment Force (ADF)Republic of Singapor Navythe FleetMaritime Security CommandNaval Diving UnitFleetFirst FlotillaThird FlottilaLanding Ships TankSeventh FlotillaEight Flottila121 Squadron123 SquaddroMaritime Security CommandSecond FlottilaSixth FlottilaNinth FlotillaMaritime Security & Response FlottilaNaval Diving Unit180 SquadronClearance Diving GroupUnderwater Demolition GroupSpecial Warfare GroupSpecial Boat GroupFrogman SchoolRepublic of Singapore Air ForceAir Combat CommandAir Defence & Operations CommandAir Power Generation CommandParticipation CommandUnmanned Aerial Vehicle CommandAir Force Training CommandDigital and Intelligence Service'' er siden 2022 en egen forsvarsgren med ansvar for militær etterretning, datakrigføring og psykologisk krigføring.