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Combined Defence Services Examination (CDS)

52 Total Tests Students Enrolled English,Hindi,Punjabi Last updated on Oct 18, 2025


  • 17 General Awareness
  • 15 English
  • 20 Quantitative Aptitude

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💂‍♂️ What is CDS?

It’s a national-level exam conducted twice a year by UPSC to recruit officers into:

  • Indian Military Academy (IMA)

  • Indian Naval Academy (INA)

  • Air Force Academy (AFA)

  • Officers Training Academy (OTA)

You clear this, and boom — you’re training to lead the nation in uniform.


🪪 Eligibility

Nationality & Marital Status

  • Must be an Indian citizen.

  • Usually unmarried candidates are eligible (especially for IMA, INA, AFA).

Age Limit

  • IMA/INA/AFA: 19–24 years

  • OTA: 19–25 years

Education

  • IMA / OTA: Degree from a recognized university.

  • INA: Degree in Engineering.

  • AFA: Degree with Physics and Mathematics at 10+2 level OR B.E./B.Tech.

Physical Standards

  • Fit, healthy, and medically cleared — eyesight, height, and stamina all matter.


🧾 Exam Pattern

For IMA / INA / AFA

Paper Marks Duration
English 100 2 Hours
General Knowledge 100 2 Hours
Elementary Mathematics 100 2 Hours

For OTA (Men & Women)

Paper Marks Duration
English 100 2 Hours
General Knowledge 100 2 Hours

All papers are objective and conducted offline.


🧠 Syllabus Sneak Peek

English:
Grammar, comprehension, synonyms, antonyms, sentence correction.

General Knowledge:
Current affairs, history, geography, polity, science, defence, economics.

Mathematics:
Algebra, arithmetic, trigonometry, geometry, mensuration, statistics.


🎯 Selection Process

  1. Written Examination

  2. SSB Interview (intelligence, psychology, personality, group tasks)

  3. Medical Examination

  4. Final Merit List


🗓 Frequency & Vacancies

  • Conducted twice a year – CDS I (February) and CDS II (September).

  • Vacancies: Around 400–500 per cycle (varies by year).


💰 Pay Scale & Perks

  • Starting pay as an officer: around ₹56,000/month+ (varies by academy).

  • Free accommodation, rations, uniforms, medical, and respect everywhere.

  • Promotions can take you all the way to Brigadier, Admiral, or Air Marshal ranks.


⚔️ Training

  • IMA: 18 months at Dehradun

  • INA: 1 year at Ezhimala

  • AFA: 1 year at Dundigal

  • OTA: 49 weeks at Chennai