Complete Guide to CDS syllabus 2027 pdf download 2026

The CDS syllabus 2027 PDF download covers English, General Knowledge, and Elementary Mathematics for IMA, INA, and AFA, while OTA aspirants are tested solely on English and General Knowledge. Issued by the Union Public Service Commission, mastering this syllabus requires targeted conceptual clarity and rigorous practice.

What is the Exam?

The Combined Defence Services (CDS) Examination is conducted biannually by the Union Public Service Commission (UPSC) to select prospective officers for the Indian Armed Forces. Passing this prestigious gateway leads to officer induction in premier training institutions: the Indian Military Academy (IMA) in Dehradun, the Indian Naval Academy (INA) in Ezhimala, the Air Force Academy (AFA) in Dundigal, and the Officers Training Academy (OTA) in Chennai.

For aspirants aiming to secure a permanent or short-service commission, navigating the official notification and curriculum is the foundational step. We at Exam Bhai break down the official parameters, subject-wise scope, and structural blueprints to ensure your preparation mirrors the evolving standards of national-level defence competitive exams.

Key Highlights 2026

Keeping track of the timeline and regulatory updates released via the official commission portal is crucial for every serious candidate targeting the 2027 cycles.

Syllabus 2026

The official curriculum prescribed by UPSC remains rigorous, evaluating candidates on linguistic proficiency, analytical aptitude, and socio-historical awareness. To streamline your study plan, we have categorized the core modules below.

For candidates looking to assess their readiness across these specific domains, you can practice free mock tests for CDS 2027 on Exam Bhai to benchmark your progress.

Exam Pattern

Understanding the weightage and sectional distribution helps map out an effective performance blueprint. The written examination format differs based on the academy you choose.

Note: All papers consist of objective-type multiple-choice questions (MCQs). There is a negative marking scheme, where one-third (0.33) of the marks allotted to a question are deducted for every incorrect response.

To fine-tune your speed and accuracy under strict time constraints, we strongly recommend that you explore sectional timed quizzes for CDS 2027 on Exam Bhai.

Eligibility Criteria

As verified from the official guidelines published on upsc.gov.in, applicants must satisfy strict nationality, age, marital status, and educational parameters:

• Nationality: Must be an Indian citizen, a subject of Bhutan/Nepal, or a Tibetan refugee who came over to India before January 1, 1962, with the intention of permanently settling.
• Age Limits:
  • IMA: Unmarried male candidates born between specific cut-off windows (typically 19 to 24 years).
  • INA: Unmarried male candidates (typically 19 to 24 years).
  • AFA: Unmarried candidates aged 20 to 24 years, holding a current DGCA-issued commercial pilot license.
  • OTA: Unmarried male and unmarried/divorced/widowed female candidates (typically 19 to 25 years).
• Educational Qualifications:
  • For IMA and OTA: Graduation degree in any discipline from a recognized university.
  • For INA: Degree in Engineering from a recognized university/institution.
  • For AFA: Degree from a recognized university with Physics and Mathematics at 10+2 level, or a Bachelor of Engineering degree.

Application Process

Applying for the examination requires candidates to register through official channels seamlessly. As per guidelines provided on upsc.gov.in:

1. Visit the official website: upsc.gov.in or upsconline.nic.in.
2. Complete Part-I Registration by entering basic personal, educational, and communication credentials.
3. Complete Part-II Registration, which involves selecting your examination center, uploading scanned copies of your photograph and signature as per prescribed pixel dimensions, and paying the application fee (INR 200 for General/OBC; female, SC, and ST candidates are exempt).
4. Verify all details carefully before final submission and save a printout of the acknowledgement slip for future recruitment references.

Preparation Strategy

Cracking a high-competition defence exam demands a systematic blend of conceptual mastery and disciplined execution. We at Exam Bhai recommend breaking down your timeline into three dedicated phases: foundational reading, revision, and simulated testing.

• Master the NCERTs: For General Science, History, and Geography, rely heavily on standard school textbooks to clear core fundamentals before moving to advanced reference manuals.
• Prioritize High-Yield Sections: In English, focus intensely on error spotting and reading comprehension. For Mathematics, prioritize arithmetic and algebra which historically command a higher volume of questions.
• Simulate Real Exam Conditions: Build stamina by solving previous years' question papers within strict 2-hour windows. You can access previous year solved papers for CDS 2027 on Exam Bhai to analyze recurring trends and high-frequency topics.

Cut-Off Trends

Historical performance trends hosted on upsc.gov.in indicate that written cut-offs fluctuate annually depending on paper difficulty and vacancy counts. Typically, sectional cut-offs remain at a mandatory 20% aggregate per subject, while final qualifying marks vary across academies:

• IMA Cut-Off Trends: Historically ranges between 120 to 140 marks out of 300.
• INA Cut-Off Trends: Generally hovers around 110 to 130 marks out of 300.
• AFA Cut-Off Trends: Usually requires a higher threshold, ranging between 135 to 155 marks out of 300.
• OTA (Men/Women) Cut-Off Trends: Usually stays between 80 to 100 marks out of 200.

Frequently Asked Questions

Is mathematics compulsory for all academies in the CDS exam?

No. Mathematics is compulsory only for candidates applying to the Indian Military Academy (IMA), Indian Naval Academy (INA), and Air Force Academy (AFA). Aspirants applying exclusively for the Officers Training Academy (OTA) are only required to appear for English and General Knowledge.

What is the level of difficulty for the Elementary Mathematics paper?

The standard of the Elementary Mathematics paper is equivalent to the Class 10 matriculation level. It covers arithmetic, algebra, geometry, trigonometry, mensuration, and statistics.

Is there any negative marking in the CDS written examination?

Yes, UPSC applies a negative marking penalty of one-third (0.33) of the total marks assigned to a question for every incorrect answer marked on the OMR sheet.

Can female candidates apply for all academies through the CDS exam?

Female candidates are eligible to apply exclusively for the Short Service Commission (SSC) at the Officers Training Academy (OTA - Non-Technical and Technical).

Where can I download the official CDS syllabus PDF?

Candidates can download the official notification containing the comprehensive subject-wise syllabus directly from the official UPSC portal at upsc.gov.in.

How many stages are there in the CDS selection process?

The selection process consists of two primary stages: a written objective examination followed by the Services Selection Board (SSB) interview, which evaluates psychological, intelligence, and personality traits over five days.