CDS Exam 2026 Complete Guide

CDS Exam 2026: Notification, Eligibility, Syllabus & Selection Process


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CDS (Combined Defence Services) exam 2026 is conducted by UPSC to recruit graduates as officers in the Indian Army, Navy, and Air Force. If you’re a graduate aspiring to join the armed forces after age 19, CDS is your primary path. This guide covers everything — CDS 2026 notification, eligibility, syllabus, exam pattern, and selection process.

CDS 2026 Important Dates

EventCDS I 2026CDS II 2026
NotificationOctober–November 2025May–June 2026
Application StartNovember 2025June 2026
Application Last DateNovember–December 2025June–July 2026
Written ExamFebruary 2026September 2026
SSB InterviewApril–September 2026November 2026 – March 2027

CDS 2026 Eligibility Criteria

AcademyGenderAgeMarital StatusEducation
IMA (Indian Military Academy)Male19–24 yearsUnmarriedAny degree from recognised university
INA (Indian Naval Academy)Male19–22 yearsUnmarriedEngineering degree (B.E./B.Tech)
AFA (Air Force Academy)Male19–23 yearsUnmarriedDegree with Physics & Maths in 12th, or Engineering
OTA — Men (Officers Training Academy)Male19–25 yearsUnmarriedAny degree from recognised university
OTA — WomenFemale19–25 yearsAnyAny degree from recognised university

CDS 2026 Exam Pattern

PaperIMA / INA / AFAOTADuration
English100 marks100 marks2 Hours
General Knowledge100 marks100 marks2 Hours
Elementary Mathematics100 marks❌ Not Required2 Hours
Total300 marks200 marks

Negative Marking: 1/3 of marks deducted for each wrong answer. All papers are objective (MCQ) type.

CDS 2026 Syllabus

English

  • Spotting errors, sentence improvement, fill in the blanks
  • Synonyms, antonyms, ordering of words in a sentence
  • Comprehension passage, ordering of sentences in a paragraph

General Knowledge

  • Current affairs: National & international events, defence news
  • History: Indian & World history, freedom movement, post-independence
  • Geography: Physical geography of India, world geography, climate
  • Polity: Constitution, government structure, elections, fundamental rights
  • Economy: Basics of Indian economy, budget, Five-Year Plans
  • Physics, Chemistry, Biology: Class 10–12 level concepts
  • Defence-specific: Military terms, operations, Indian defence organisations

Elementary Mathematics

  • Number system, HCF/LCM, square roots, average
  • Ratio & proportion, percentages, profit & loss, simple & compound interest
  • Time & distance, time & work
  • Algebra: Basic operations, equations, quadratic equations
  • Geometry: Lines, angles, triangles, circles, quadrilaterals
  • Mensuration: Area, volume of 2D and 3D shapes
  • Statistics: Mean, median, mode, bar charts, histograms
  • Trigonometry: Basic ratios, heights and distances

CDS vs NDA: Key Differences

ParameterNDACDS
EligibilityClass 12 pass / appearingGraduation completed
Age16.5 – 19.5 years19 – 25 years (branch-wise)
GenderMale & FemaleMale & Female (OTA for women)
InterviewSSB (5 days)SSB (5 days)
Maths in ExamYes (Class 12 level)Yes (Class 10 level) — not for OTA
Training AcademyNDA, Pune (then to IMA/INA/AFA)Directly to IMA/INA/AFA/OTA

NCA Academy provides comprehensive coaching for both NDA and CDS examinations. With over 59 years of experience, our faculty includes ex-defence officers who guide candidates through the written exam as well as the SSB interview process.

Frequently Asked Questions — CDS Exam 2026

CDS (Combined Defence Services) is a UPSC exam conducted twice a year to recruit graduates as officers into IMA, INA, AFA, and OTA of the Indian Armed Forces.

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Looking for the best CDS coaching in Chandigarh? NCA Academy (since 1967) is India’s oldest defence coaching institute with a proven track record. CDS coaching in Chandigarh → Join NCA Academy
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