NDA vs CDS: Complete Defence Exam Comparison & Preparation Guide 2026
Detailed comparison of NDA and CDS exams covering eligibility, syllabus, exam pattern, SSB interview preparation, and career prospects in Indian Armed Forces.
Defence Exams in India: NDA vs CDS 2026
India's armed forces offer some of the most prestigious and rewarding careers. The two primary entry exams conducted by UPSC — NDA (National Defence Academy) and CDS (Combined Defence Services) — attract lakhs of aspirants every year.
Quick Comparison
| Feature | NDA | CDS | |---------|-----|-----| | Eligibility | 12th pass (16.5-19.5 years) | Graduate (19-25 years) | | Conducted by | UPSC (twice a year) | UPSC (twice a year) | | Exam Date 2026 | NDA I: April 12, NDA II: Sep 13 | CDS I: May 24, CDS II: Sep 13 | | Training | 3 years at NDA Khadakwasla | 18 months at IMA/OTA | | Services | Army, Navy, Air Force | Army, Navy, Air Force | | Salary | ₹56,100+ (after commissioning) | ₹56,100+ (after commissioning) |
NDA 2026: Key Details
Eligibility
- Age: 16.5 to 19.5 years
- Education: 12th pass or appearing (Physics & Math mandatory for Navy and Air Force)
- Gender: Male and Female candidates
Exam Pattern
- Paper I - Mathematics: 120 questions, 300 marks, 2.5 hours
- Paper II - GAT: 150 questions, 600 marks, 2.5 hours (English 200 + GK 400)
- SSB Interview: 900 marks (5-day process)
Preparation Strategy
- Mathematics: Master NCERT 11th-12th. Focus on Algebra, Trigonometry, Calculus, and Statistics
- English: Read newspapers, learn grammar rules, practice comprehension
- GK: Cover Physics, Chemistry, History, Geography, Current Affairs
- Physical Fitness: Start running, swimming, and outdoor sports early
CDS 2026: Key Details
Eligibility
- Age: 19 to 25 years (IMA/AFA/INA), 19-25 for OTA
- Education: Graduation in any discipline (Engineering for technical entries)
Exam Pattern
- English: 120 questions, 100 marks
- General Knowledge: 120 questions, 100 marks
- Elementary Math: 100 questions, 100 marks (IMA/INA/AFA only)
- SSB Interview: 300 marks
SSB Interview: The Game Changer
The SSB (Services Selection Board) interview is a 5-day selection process:
| Day | Activity | |-----|----------| | Day 1 | Screening Test (OIR + PPDT) | | Day 2 | Psychology Tests (TAT, WAT, SRT, SD) | | Day 3 | Group Tasks (GD, GPE, PGT, HGT, CT) | | Day 4 | Individual Tasks (IO, Lecturette) | | Day 5 | Conference with Board |
SSB Success Tips:
- Be genuine — don't try to fake qualities
- Show Officer Like Qualities (OLQs): Leadership, courage, initiative, cooperation
- Practice group discussions and lecturettes
- Stay physically fit — the outdoor tasks are demanding
Other Defence Entry Options
- AFCAT: For graduates wanting to join the Indian Air Force (Flying, Technical, Ground Duty branches)
- Agniveer (Agnipath Scheme): For 10th/12th pass candidates as soldiers for 4-year service
- Indian Navy SSR/MR: Direct sailor entry in the Navy
- Indian Coast Guard: Navik and Yantrik entries
- Territorial Army: For working professionals who want to serve part-time
Career Growth in Armed Forces
| Rank | Army | Navy | Air Force | |------|------|------|-----------| | Entry | Lieutenant | Sub-Lieutenant | Flying Officer | | After 5 years | Captain | Lieutenant | Flight Lieutenant | | After 11 years | Major | Lt Commander | Squadron Leader | | Senior | Colonel | Captain | Group Captain | | Top | General | Admiral | Air Chief Marshal |
Salary & Perks (After 8th Pay Commission)
- Starting Salary: ₹56,100 + DA + MSP + other allowances (CTC ~₹1 lakh/month)
- Perks: Free accommodation, CSD canteen, free medical, subsidized education, pension, adventure activities
- Seva Nidhi (Agniveer): ₹11.71 lakh tax-free on completion of 4-year service
Start your defence exam preparation with GovtExamPath's eligibility checker and find out which defence exams you qualify for based on your age, education, and physical standards.