UK Reserves aptitude tests
Which test each Reserve uses, where it fits in your application and how to prepare around a job or studies. Plus two Reserves-only packs, the Reservist DAA Pack and the Reservist AOSB Pack: 5 one-to-one sessions each, for £299.
By Harjot Singh · Checked against official sources on 3 November 2026
The Royal Naval Reserve, the RAF Reserves and the Royal Marines Reserve all list an aptitude test early in the joining process. Army Reserve officer candidates go through the Army Officer Selection Board (AOSB). This guide shows which test you will sit, the steps around it and how to prepare when your time is short.
Which test will you sit?
| Reserve | Test or assessment | What the official page says |
|---|---|---|
| Royal Naval Reserve | Defence Aptitude Assessment (DAA) | It assesses verbal reasoning, numerical reasoning, work rate, spatial reasoning, electrical comprehension and mechanical comprehension. You sit it after an interview at your nearest Armed Forces Careers Office. |
| RAF Reserves | An aptitude test the RAF Reserves page calls the "Defence Aptitude Test" | It is taken at the local squadron you applied to, or in some cases at a local Armed Forces Careers Office. The page links to an online practice test. |
| Royal Marines Reserve | Defence Aptitude Assessment (DAA) | A multiple-choice test that all recruits sit. It comes after your application form and a presentation at your local unit. |
| Army Reserve officers | Army Officer Selection Board (AOSB) | Briefing at Westbury, described as a 24-hour session. Candidates who pass are invited back for Main Board, over 3½ days. |
| Army Reserve soldiers | Army Assessment Centre | A 2-day assessment at one of the Army's Assessment Centres in the UK. The Army pays for your travel there and back. |
Tests and steps can change and can differ by role. Always check the official page for your role and the joining instructions you are sent.
Built for part-time candidates
One 1h30 session a week, so your preparation fits around work or studies.
For Royal Naval Reserve, RAF Reserves and Royal Marines Reserve candidates preparing for the aptitude test around a job or studies.
- 5 one-to-one sessions × 1h30 (7.5 hours), one a week on Zoom
- Homework after every session, with a marked report
- Exclusive practice trainer: my DAA Trainer, for unlimited home practice throughout your pack. Not sold anywhere else.
- Starts with a free 30-minute diagnostic
- Use your sessions within 6 weeks of your first session
For Army Reserve officer candidates preparing for the Army Officer Selection Board around a job or studies.
- 5 one-to-one sessions × 1h30 (7.5 hours), one a week on Zoom
- 3 sessions on the psychometric tests: verbal, numerical and abstract reasoning, as candidates widely report them
- 2 sessions on interview practice and the planning exercise
- Homework after every session, with a marked report
- Exclusive practice trainer: my AOSB Speed Trainer, for unlimited home practice throughout your pack. Not sold anywhere else.
- Starts with a free 30-minute diagnostic. If it shows you are already strong in one area, one session can move between the tests and the board preparation.
- Use your sessions within 6 weeks of your first session
Reserves candidates only
The Reservist DAA Pack is only for candidates applying to the Royal Naval Reserve, the RAF Reserves or the Royal Marines Reserve. The Reservist AOSB Pack is only for candidates applying to be an Army Reserve officer. Before your first session, I ask to see proof of your Reserves application.
- Book and pay on the secure Payhip checkout, by card or PayPal.
- Message me on WhatsApp straight after paying, so we can fix your session times.
- Show me your proof before your first session, for example your application confirmation email. I only look at it and do not keep a copy.
Not applying to the Reserves? You can move to the Fast-Track plan for your test (6 sessions × 1h30, £399) by paying the £100 difference, or get a full refund. Either way, this is sorted before your first session.
Questions first? Ask me on WhatsApp.
Applying to a Regular role instead? See the DAA plans or the AOSB plans.
How to apply: the steps around the test
Royal Naval Reserve
Once you have confirmed your eligibility, the Royal Navy lists these steps:
- Presentation. An Initial Maritime Reserves Presentation at your nearest unit, where you can look around, meet the team and ask questions.
- Interview and DAA. An interview at your nearest Armed Forces Careers Office, where your eligibility is checked and the joining process is explained. You then sit the DAA.
- Join your local unit. At Attestation you swear allegiance to the King and sign the Official Secrets Act. You become a Phase 0 recruit and attend weekly drill nights. Formal training starts only once you pass your medical and fitness test.
- Medical and fitness assessment. Up to 2 days at a Candidate Preparation Centre for a face-to-face medical examination and the Pre-Joining Fitness Test. Your eye test is done with a local optician.
- Phase 1 training. You are now a signed-up member of the Royal Naval Reserve as a Phase 1 recruit. You are given your Royal Navy identification card and uniform and can start formal basic training.
- Training. Your Phase 1 training takes place on weekly drill nights. You also spend two weekends learning about life in the military and at sea.
Applying as a Royal Naval Reserve officer? The Royal Navy's General Entry Officer Reserve page lists the same early steps. It then adds the Admiralty Interview Board, a two-day competency-based assessment, after Phase 1 training. A confirmation course comes after training.
RAF Reserves
The RAF lists these steps:
- Squadron information event. In person or online.
- Aptitude test. The "Defence Aptitude Test", at the local squadron you applied to or in some cases at a local Armed Forces Careers Office.
- Selection interview. The RAF says some roles need a second interview, a further test or both. These are normally run over one to three days at an RAF base.
- Health assessment. An occupational health assessment, including your hearing, eyesight and body mass index.
- Fitness test. The Pre-Joining Fitness Test: a 2.4 km run at a local gym.
- Acceptance. You attest into the RAF Reserves at your chosen squadron.
- Training. Basic recruit training at RAF Halton in Buckinghamshire over 15 days. Training for your role follows in your spare time.
Royal Marines Reserve
The Royal Navy lists these steps:
- Application form. Your full application in the Recruitment Portal.
- Visit your local unit. An Initial Maritime Reserves Presentation at your nearest unit.
- DAA. A multiple-choice test that all recruits sit.
- Interview. A formal interview to assess your suitability for your chosen role.
- Medical and eye tests. With a Ministry of Defence approved doctor, arranged by your local Armed Forces Careers Office.
- Join your local unit. Attestation, then weekly drill nights as a Phase 0 recruit. Formal training starts only once you pass the medical and fitness test.
- Basic Fitness Test. A three-mile outdoor run in under 22 minutes 30 seconds.
- Potential Royal Marines Course. A two-day introduction to life in the Royal Marines Reserve, with a number of physical tests you need to complete to progress.
Army Reserve officers
The British Army lists these steps: apply online, meet your chosen unit, medical checks, a face-to-face medical at an assessment centre, then the Army Officer Selection Board at Westbury. Briefing is described as a 24-hour session to assess your officer potential and teach you the skills you need for Main Board. Candidates who pass Briefing are invited back for Main Board, where they are tested mentally and physically over 3½ days. The Army also runs background checks.
The Army's page for Regular officers describes a 2-day Briefing and a 4-day Main Board. Check your own joining instructions for the times that apply to you.
How to prepare around a job or studies
- Start with the official practice. The Royal Navy says its DAA practice questions are in the same format as the real test. The RAF says its familiarisation questions are designed to be as close to the real test as possible. The RAF Reserves page links to an online practice test.
- Find your weakest sections first. A short timed check of every section shows where your marks are going, so your limited time goes where it counts.
- Practise little and often. In my experience, twenty focused minutes on most days does more than one long session at the weekend.
- Learn the core facts for electrical and mechanical comprehension. Circuits, gears, pulleys and levers need knowledge as well as speed. You do not need an engineering background.
- Practise without a calculator. The RAF says you cannot use one in the DAA. Paper and a pencil are allowed.
- Sit a full timed mock before the real test. The RAF's familiarisation test gives the real-test timing for each section. Together they add up to 128 questions in 69 minutes. A full mock shows whether you can keep your pace to the end.
- Check your joining instructions. Test arrangements can differ by Reserve and by role.
For every DAA section with its questions and timings, see my DAA test guide.
Officer candidates and the Army Reserve
- Royal Naval Reserve General Entry officer candidates sit the DAA too, so the Reservist DAA Pack is open to you.
- Army Reserve officer candidates: the Reservist AOSB Pack covers the psychometric tests, interview practice and the planning exercise. Try the free AOSB mini-mock and the free planning exercise first. For the format of the tests as candidates report them, see my AOSB guide.
- Army Reserve soldier candidates: my Army coaching is for officer selection. I do not coach the 2-day soldier assessment.
Frequently asked questions
Who can book the Reserves packs?
The Reservist DAA Pack is for anyone applying to the Royal Naval Reserve, the RAF Reserves or the Royal Marines Reserve. The Reservist AOSB Pack is for anyone applying to be an Army Reserve officer. For both, you need to show proof of your Reserves application before your first session.
What counts as proof of a Reserves application?
Anything that shows you have applied, such as your application confirmation email or a message from your unit, recruiter or Armed Forces Careers Office about your next step. You can show it on screen before your first session starts or send a screenshot on WhatsApp, which I delete once I have checked it. Cover anything you would rather not share, such as your address.
What if I am applying to the Regulars instead?
Then these packs are not the right ones. If you have already booked one, you can move to the Fast-Track plan for your test (6 sessions × 1h30 within 2–3 weeks, £399) by paying the £100 difference, or get a full refund. Either way, this is sorted before your first session. See all DAA plans and AOSB plans.
My test is less than 5 weeks away. Which option fits?
The packs are built around one session a week. If your test or board is sooner, message me before you book and I will tell you honestly which option fits, such as the Fast-Track plan.
Is the Reserves test the same as the Regulars test?
The Royal Naval Reserve and Royal Marines Reserve pages name the Defence Aptitude Assessment, the same name the Royal Navy uses for the test its Regular candidates sit. The Royal Naval Reserve page lists the same six areas. The RAF Reserves page calls its test the "Defence Aptitude Test". The score you need depends on your role, so ask your unit, squadron or Armed Forces Careers Office what yours needs.
Is the Army Reserve officer Briefing the same as the Regular one?
Not in length. The Army describes the Reserve officer Briefing as a 24-hour session and the Regular Briefing as 2 days. The Army does not publish the details of the psychometric tests, so check the joining instructions you are sent.
How long do I keep the practice trainer?
Throughout your pack: until your last session or 6 weeks after your first session, whichever comes first.
Are the sessions online?
Yes. Every session is one-to-one on Zoom, so you can join from anywhere in the UK.
Sources
- Royal Navy: Royal Naval Reserve joining process
- Royal Navy: General Entry Officer Reserve
- Royal Navy: Royal Marines Reserve application support
- Royal Navy: Defence Aptitude Assessment
- RAF Recruitment: Reserves application process
- RAF Recruitment: DAA familiarisation
- RAF Recruitment: DAA familiarisation test (sections and timings)
- British Army: Reserve officer application process
- British Army: Regular officer application process
- British Army: Reserve soldier application process