Every route into the Armed Forces, explained
There are fewer routes than the recruitment sites make it look, and the choice that actually matters is not which service you join. It is whether you go in as an officer or in the ranks, and whether you go full time or keep your civilian life. Everything else — Army or Navy, this trade or that one — is a preference. Those two are a fork in the road.
Ages and entry rules below are the published requirements for the British Army as of August 2026 and are broadly mirrored by the Royal Navy and RAF, though each service sets its own detail. Always confirm the current rules with the service itself: they change, and a recruiter is the only source that can speak to your particular case.
The fork: ranks or officer
Going in through the ranks means you learn a trade and do it. You start as a soldier, a rating or an aviator, you are trained for a specific job — mechanic, chef, gunner, medic, engineer, dog handler, air traffic controller — and you get good at it. Promotion comes with time and competence, and plenty of people who join this way end up running things.
Going in as an officer means you are trained to lead from the start. Less time with your hands on the equipment, more time responsible for the people using it. It asks for A levels or equivalent where the ranks route mostly does not, it pays more from day one, and it is a different job rather than a better one.
The honest test is not which sounds more impressive. It is whether you would rather be the person who can fix the vehicle or the person answerable for the twelve people fixing vehicles. Both are needed and the services are candid that picking wrong makes for a miserable few years.
Nothing is sealed. People commission from the ranks — it is a well-worn path with its own selection, and an officer who spent four years as a soldier first is not a rarity.
The four ways in
| Route | Who it is for | Where you start |
|---|---|---|
| Junior entry | 16 to 17 years 5 months | Army Foundation College, then standard training |
| Standard entry, ranks | 18 and over | Basic training, then trade training |
| Officer entry | A levels or equivalent | Sandhurst, Dartmouth or Cranwell |
| Reserves | Anyone keeping a civilian life | Weekends and evenings, same training standard |
Junior entry is the one most people have never heard of and it is the reason the Armed Forces belong on a school-leaver's list at all. If you are 16 to 17 years and 5 months you go to the Army Foundation College first, then into standard training. It is covered properly in joining at 16 or 17.
You can begin an application from 15 years and 7 months, and attend the assessment centre from 15 years and 9 months. That is not a typo. The process is slow enough that starting before your sixteenth birthday is normal rather than keen. Anyone under 18 needs parental consent.
The reserves deserve more attention than they get. Same training standard, same trades, real pay for the days you serve, and you keep your job or your course. For someone unsure whether military life suits them, it is the only route that lets you find out without committing your twenties to the answer.
Where the apprenticeship hides
Most people picture an apprenticeship as a thing you do instead of the Army. In practice the great majority of ranks roles carry one, and you are paid a full salary throughout rather than an apprentice rate — which is the single biggest financial difference between a military apprenticeship and a civilian one.
The qualification is a real one, awarded by the same bodies that award it outside, and it does not evaporate when you leave. Vehicle mechanics, electrical engineering, catering, logistics, IT, healthcare, aviation maintenance and heavy vehicle licences all transfer directly to civilian employers who are usually short of exactly those people.
Set that against the civilian equivalent honestly. A civilian apprentice at 18 can be on the apprentice minimum wage, living at home, paying for their own travel. A military apprentice is on the full starting salary from day one, fed and housed. The trade-off is that you cannot hand in your notice on a Friday — see what Armed Forces jobs pay for the full arithmetic.
Choosing a service, and a trade
Pay is identical across the three services at the same rank and time served, so the choice is about the life, not the money.
Ask yourself where you want to be when you are working. The Army is land, vehicles and being outside in weather you did not choose. The Royal Navy is ships and submarines, months away, a small world with its own rhythm. The RAF is aircraft and the enormous technical operation that keeps them flying, mostly from a base you go home to. The Royal Marines are commandos and the entry standard is deliberately brutal.
Then pick the trade before you pick the cap badge, because the trade is what you will do for eight hours a day and it is what you take with you afterwards. Nine roles on this board sit inside the Armed Forces, and each page says what the work actually involves:
- Job roleSoldier
- Job roleArmy officer
- Job roleRoyal Navy rating
- Job roleRoyal Navy officer
- Job roleRoyal Marines commando
- Job roleRAF aviator
What will actually stop you
Four things end applications, and only one of them is about how good you are.
Medical. The standards are strict and they are applied properly. Asthma, some mental health histories, certain joint problems and a long list of specific conditions can bar entry outright or until a set period has passed. This is the single most common reason an application ends, and the only way to know your position is to declare everything honestly and let the medical team rule. Hiding something does not work: they get your medical records.
Fitness. There is a standard and it varies by role. It is publicly available, it is achievable for most people with a few months of work, and turning up unable to meet it wastes everyone's time when the fix is a training plan and a bit of discipline.
Nationality and residency. Rules exist about citizenship and how long you have lived in the UK, and they differ between services and roles.
Criminal record. Not automatically a bar. It depends entirely on what, when and how old you were. Declare it — they will find out, and the non-declaration is usually more fatal than the offence.
Every one of these is checked at the assessment centre, which is the subject of selection and interview.
So: ranks or officer is the real decision, junior entry exists from 16, the reserves let you test the water without betting your twenties on it, and almost every ranks role carries a paid apprenticeship worth having. Next, read what selection actually involves, or go straight to what it pays. If you are not 18 yet, joining at 16 or 17 is your page.
Contains public sector information licensed under the Open Government Licence v3.0