Registration and service: You register at 16½, and full-time NS lasts two years. A Level holders usually enlist between January and April, and diploma holders between May and October.
Deferment: CMPB defers NS while you finish A Levels, a diploma, or similar pre-university study, at home or overseas within age limits, but not for degree courses.
Starting a degree with your cohort: CMPB may let you pause NS to start a degree with your school cohort (it calls this disruption). You need an unconditional offer from an eligible university and must apply through OneNS three months ahead, then finish your NS later in one continuous period.
Singapore’s universities: If you apply in your final school year and are admitted, NTU reserves your place until you finish NS. NUS reserves a place for you while you serve full-time NS, and you enroll once you’ve finished or been granted disruption.
Universities abroad: Harvard considers two-year deferrals for military service, subject to approval. Most Cambridge colleges will consider a place deferred for two years if you ask in your My Cambridge Application.