Best Study Material for NDA/CDS Exams 2020 | Free Samples Made Easy

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Quick Guide to Defence Exam [CDS/NDA] | Details & Patterns

There are two levels of defence exam conducted by UPSC every year. Both are gateways to are tri-service of the Indian Armed Forces. The process of recruitment, training, perks, salary, promotions, and opportunities differ in both.

Combined Defence Service” (CDS) : It is conducted by the Union Public Service Commission (UPSC). The exam is for the recruitment into the Indian Military Academy, Officers Training Academy, Indian Air Force Academy, and Indian Naval Academy. It invites only unmarried graduates for the exam.

National Defence Academy [NDA] : It is conducted by the UPSC on the basis of 12th Standard. A candidate has to undergo training for a period of 4 years and be suitable for relevant posts.

Following are the detail of CDS and NDA:




Age Group

19-25 years of age

16.5-19.5 years of age

Educational Qualification




Both Men & Women

Only Men

Pattern of Exam

Written/offline+ SSB

Written/offline+ SSB

Frequency of Exam

2 times a Year

2 times a Year

Training Duration

18 months for IMA

37-40 months for NO

74 months for AFO

4-4.5 years (4 years at NDA and 1 year in IMA, NA, AFA)

Training Departments

Indian Military Academy

National Defence Academy



General Knowledge

Elementary Mathematics


General Knowledge

Elementary mathematics


Languages of Exam

Hindi & English

Hindi & English

Best books to Prepare for Defence Exams

There is no time to waste if you have the desire to be part of this life-long elite profession. Besides, lucrative remuneration, your status in society, and the country at large will be lauded with pride and gaiety. Here are helpful insights to crack both NDA and CDS in one go:

  • Motivate yourself every day
  • Set your goal and fix it so firmly
  • Prepare with the best and relevant books
  • Test yourself and correct your mistakes

If you are confused with the selection of best books for the NDA exam, best books for drdo exam 2021 or free afcat study material in hindi/english. Disha Publication has come up with the right help to try out the free samples before buying the books. This gives a sure chance only to pick the relevant books. Now try out the best preparation books for the Indian Navy, designed for the purpose of qualifying you.

Free AFCAT study material

  • Air Force Common Admission Test (AFCAT) is a computer-based exam. It is an entrance exam conducted for aspiring candidates to join Indian Air Force, for various positions like Ground Duty [Technical & Non-Technical], or Commissioned Officers in Flying. Candidates with 60% marks in Physics and Maths in 10+2 are eligible to register. The subjects for the exam are as under:
  • English
  • General Awareness
  • Numerical Ability
  • Reasoning and Military Aptitude Test
Try out our free AFCAT Study Materials available in English.

AFCAT/DRDO best book in Hindi/English

Looking for the best books for DRDO exam 2021 or Defence Exam Preparation Books? Disha Publication has success-proven books, which have helped thousands of candidates to clear the exam with a systematic study plan and strategy.  Be part of the successful candidates, and try out the samples for AFCAT and DRDO exams. You have absolutely nothing to worry about the range of concepts explained in the books, as they are thoroughly checked and revised by experts. Besides, it covers 100% latest pattern syllabus will help you master the concepts at one go. Try now and get your titles in Defence.

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