Preparing for the Defence Written Exam is one of the most crucial steps for students aspiring to join the Indian Armed Forces through prestigious exams like NDA(National Defence Academy Exam), CDS(Combined Defence Services Exam), and AFCAT. Every year, lakhs of candidates appear with the dream of serving the nation, but only a few succeed. The difference lies not just in hard work but also in following the right preparation strategy. If you are serious about your goal, knowing the best things to do during your preparation will maximize your chances of success.
This student guide will walk you through the most effective practices, study habits, and preparation tips for cracking the Defence Written Exam.
1. Understand the Exam Pattern and Syllabus Thoroughly
The first step is clarity. Each defence exam has a specific exam pattern and syllabus that candidates must master. For example:
- NDA (National Defence Academy Exam): Includes Mathematics and General Ability Test (English + General Knowledge).
- CDS (Combined Defence Academy Exam): Covers English, General Knowledge, and Elementary Mathematics (except OTA, which excludes Math).
- AFCAT Exam: Focuses on English, General Awareness, Reasoning, and Military Aptitude.
Understanding the weightage of subjects, the type of questions, and time duration allows you to create a focused study plan. Never start preparation without analyzing the exam pattern.
2. Create a Realistic Study Schedule
A disciplined timetable is the backbone of your preparation. Divide your day into subject-wise slots with balanced time for revision and practice. For instance:
- Morning: Mathematics practice (2 hours)
- Afternoon: English grammar and vocabulary (1.5 hours)
- Evening: General Knowledge/Current Affairs (2 hours)
- Night: Mock test analysis or revision (1.5 hours)
Consistency is key. Avoid long breaks and stick to the plan as much as possible.
3. Focus on Building Strong Fundamentals
Many students jump straight to solving advanced questions without mastering the basics. This often leads to confusion. Defence exams, especially NDA(National Defence Academy and CDS(Combined Defence Services Mathematics, test conceptual clarity. Revise formulas, grammar rules, and basic science concepts.
For English, strengthen parts of speech, comprehension, and error spotting. For General Knowledge, focus on history, geography, polity, and defence-related news. A strong foundation reduces errors and boosts accuracy.
4. Practice with Previous Year Question Papers
Previous year papers are a goldmine. They give you a clear idea of the question pattern, difficulty level, and recurring topics. Solve at least the last 10 years of question papers. This practice helps you understand examiner expectations and improves time management.
Also, simulate exam conditions while attempting these papers to build stamina for the actual exam.

5. Take Regular Mock Tests
Mock tests are essential to evaluate your preparation. Many coaching centers and online platforms provide full-length and sectional mock tests. Regular testing helps you:
- Identify strong and weak areas.
- Build speed and accuracy.
- Reduce exam-day stress by creating familiarity with the test format.
After every test, spend time analyzing your mistakes. Learn why you went wrong and avoid repeating the same errors.
6. Strengthen General Knowledge and Current Affairs
Defence exams give significant weightage to General Knowledge and Current Affairs. Make a habit of reading newspapers daily, focusing on defence updates, national security, international relations, and government policies.
Magazines like Pratiyogita Darpan and monthly current affairs booklets can also help. Stay consistent with daily updates rather than trying to cover everything in the last month.
7. Focus on Vocabulary and Communication Skills
For exams like NDA, CDS, and AFCAT, the English section is critical. Along with grammar, vocabulary plays a big role. Make flashcards of difficult words, idioms, and synonyms. Reading editorials in newspapers not only builds vocabulary but also improves comprehension.
Good communication skills also prove valuable in the SSB interview stage, so start early.
8. Manage Your Time Smartly
Time management can make or break your exam performance. Divide the total duration among sections based on your strength. For example, if Mathematics takes more time, complete English quickly. Avoid spending too much time on one question.
Practice solving papers within the time limit to build exam temperament.
9. Stay Physically and Mentally Fit
Preparing for the Defence Written Exam is not just about academics. Defence services demand candidates to be physically and mentally strong. Maintain a healthy lifestyle by:
- Exercising daily (running, push-ups, and yoga).
- Eating a balanced diet.
- Sleeping 7–8 hours regularly.
A calm and focused mind will help you retain more and perform better during the exam.
10. Use the Right Study Material
Avoid collecting too many books. Stick to standard sources like invicta defence academy that cover the syllabus effectively. For example:
- Mathematics: NCERT books (Class 9–12), R.S. Aggarwal.
- English: Wren & Martin, Arihant English for Competitive Exams.
- General Knowledge: Lucent GK, Manorama Yearbook.
- Current Affairs: Daily newspaper, monthly current affairs magazines.
Quality matters more than quantity when it comes to preparation resources.
11. Revise Regularly
Revision is a continuous process, not something to do only in the last week. Prepare short notes, formula sheets, and flashcards for quick revision. Schedule weekly revisions to keep all subjects fresh in memory.

12. Stay Positive and Motivated
The journey to crack the Defence Written Exam is long and often challenging. Self-doubt and stress are natural but must be controlled. Surround yourself with positive influences, talk to mentors, and remind yourself of your ultimate goal – serving the nation.
Conclusion
Success in the Defence Written Exam depends on consistent preparation, smart strategy, and unwavering dedication. By understanding the exam pattern, practicing regularly, staying updated with current affairs, and maintaining physical fitness, every student can increase their chances of success.
Remember, cracking the written exam is the first step. It opens the gateway to the SSB interview, where your personality, leadership, and officer-like qualities will be tested. Start preparing with focus, use the best study materials, and maintain discipline in your schedule.