CDS Syllabus 2026 – Complete Subject-Wise Syllabus, Exam Pattern & SSB Details
The CDS Syllabus 2026 is prescribed by the Union Public Service Commission (UPSC) for candidates preparing for the Combined Defence Services Examination. Understanding the latest CDS Syllabus and Exam Pattern is essential for effective preparation, as the selection process consists of a written examination followed by the Services Selection Board (SSB) Interview and Medical Examination. The CDS 2026 syllabus includes English, General Knowledge, and Elementary Mathematics. Candidates aspiring to join the Indian Military Academy (IMA), Indian Naval Academy (INA), Air Force Academy (AFA), and Officers Training Academy (OTA) should thoroughly understand the subject-wise CDS Syllabus 2026 to maximize their chances of success.
The Union Public Service Commission conducts the Combined Defence Services Examination twice every year to recruit eligible candidates into various defence academies. Every year, lakhs of candidates appear for the examination, making it one of the most prestigious defence recruitment examinations in India. Therefore, candidates should have a clear understanding of the latest CDS Syllabus 2026 and Exam Pattern before starting their preparation.
The CDS selection process consists of a written examination, Services Selection Board Interview, and Medical Examination. For IMA, INA, and AFA, the written examination consists of English, General Knowledge, and Elementary Mathematics. For OTA, the examination consists of English and General Knowledge. Candidates qualifying in the written examination are called for the SSB Interview, which evaluates intelligence, personality, and leadership qualities.
Preparing according to the latest CDS Syllabus 2026 helps candidates formulate an effective study plan and allocate sufficient time to each subject. Regular revision, mock tests, and previous year papers play an important role in improving speed and accuracy. Referring to the official CDS Syllabus PDF regularly enables candidates to understand the exam pattern and prioritize important topics.
Official Syllabus Link
UPSC Official Website
https://upsc.gov.in/examinations/syllabus
📚 Best Books for CDS Preparation 2026
| Subject | Recommended Book | Author/Publisher |
|---|---|---|
| English | Objective General English | S.P. Bakshi |
| General Knowledge | Lucent’s General Knowledge | Lucent Publications |
| Mathematics | Quantitative Aptitude for Competitive Examinations | R.S. Aggarwal |
| Mathematics | Objective Mathematics | R.D. Sharma |
| History | NCERT History Books | NCERT |
| Geography | Certificate Physical and Human Geography | G.C. Leong |
| Previous Year Papers | CDS Solved Papers | Pathfinder Publications |
| Practice Sets | CDS Practice Sets | Arihant Publications |
CDS Preparation Tips 2026
Candidates preparing for the Combined Defence Services Examination should first understand the complete CDS Syllabus 2026 and Exam Pattern before starting their preparation. A proper study plan, regular revision, and consistent practice are essential for success in the examination. Aspirants should focus on strengthening their fundamentals in English, General Knowledge, and Elementary Mathematics. Reading newspapers regularly, staying updated with current affairs, and solving mock tests can significantly improve performance. Candidates are also advised to solve previous year question papers to understand the level of difficulty and important topics frequently asked in the examination.
Importance of Understanding CDS Syllabus 2026
Understanding the CDS Syllabus 2026 is one of the most important aspects of preparation. A thorough knowledge of the syllabus helps candidates avoid unnecessary topics and focus on the areas that carry maximum weightage. It also enables aspirants to create an effective timetable and allocate sufficient time to each subject. Candidates who prepare according to the official syllabus are more likely to perform better in the examination.
Benefits of Solving CDS Previous Year Papers
Solving CDS previous year question papers helps candidates understand the examination pattern and the type of questions asked in the examination. Previous year papers also help improve speed, accuracy, and time management skills. Regular practice boosts confidence and enables candidates to identify their strengths and weaknesses. Aspirants are advised to solve at least the previous five years’ question papers for effective preparation.
CDS Marking Scheme 2026
The CDS written examination consists of objective-type multiple-choice questions. For every incorrect answer, one-third of the marks assigned to that question are deducted as negative marking. Therefore, candidates should answer questions carefully and avoid random guessing. Understanding the marking scheme helps candidates formulate an effective exam strategy and maximize their scores.
CDS SSB Interview
Candidates qualifying in the written examination are called for the Services Selection Board Interview. The SSB Interview is designed to assess the intelligence, personality, communication skills, leadership qualities, and decision-making abilities of candidates. The interview process generally consists of two stages and includes psychological tests, group tasks, personal interviews, and conference rounds. Candidates must prepare thoroughly for the SSB Interview, as it plays a crucial role in the final selection process.
Why Choose a Career Through CDS?
The Combined Defence Services Examination provides an excellent opportunity for young aspirants to serve the nation by joining the Indian Army, Indian Navy, and Indian Air Force as officers. Apart from attractive salary and allowances, defence services offer job security, social prestige, career growth opportunities, and various benefits. Candidates selected through CDS undergo rigorous training and become part of one of the most respected professions in the country.
UPSC CDS Syllabus 2026
The Combined Defence Services (CDS) Examination is conducted by the Union Public Service Commission (UPSC) twice every year to recruit officers for:
- Indian Military Academy (IMA)
- Indian Naval Academy (INA)
- Air Force Academy (AFA)
- Officers Training Academy (OTA)
The selection process consists of:
- Written Examination
- Services Selection Board (SSB) Interview
- Medical Examination
- Final Merit List
CDS Exam Pattern 2026
For IMA, INA & AFA
| Subject | Duration | Maximum Marks |
|---|---|---|
| English | 2 Hours | 100 |
| General Knowledge | 2 Hours | 100 |
| Elementary Mathematics | 2 Hours | 100 |
| Total | 6 Hours | 300 |
For OTA (Men & Women)
| Subject | Duration | Maximum Marks |
|---|---|---|
| English | 2 Hours | 100 |
| General Knowledge | 2 Hours | 100 |
| Total | 4 Hours | 200 |
Negative Marking: One-third marks are deducted for each incorrect answer.
CDS English Syllabus 2026
The English paper tests vocabulary, grammar, comprehension, and communication skills.
Important Topics
- Synonyms
- Antonyms
- One Word Substitution
- Idioms and Phrases
- Spotting Errors
- Sentence Improvement
- Sentence Rearrangement
- Para Jumbles
- Fill in the Blanks
- Cloze Test
- Reading Comprehension
- Ordering of Sentences
- Vocabulary
- Grammar Rules
- Active and Passive Voice
- Direct and Indirect Speech
CDS General Knowledge Syllabus 2026
The General Knowledge paper covers current affairs and static subjects.
Current Affairs
- National News
- International Affairs
- Sports
- Awards
- Defence Exercises
- Government Schemes
- Important Events
History
Ancient India
- Indus Valley Civilization
- Vedic Age
- Mauryan Empire
- Gupta Empire
Medieval India
- Delhi Sultanate
- Mughal Empire
Modern India
- Revolt of 1857
- Freedom Movement
- Constitutional Development
Geography
- Physical Geography
- Indian Geography
- World Geography
- Rivers
- Mountains
- Climate
- Agriculture
- Industries
Indian Polity
- Constitution
- Fundamental Rights
- Parliament
- Judiciary
- President
- Prime Minister
- Panchayati Raj
Economy
- Banking
- Budget
- Inflation
- GDP
- Economic Reforms
Science
- Physics
- Chemistry
- Biology
- Environment
- Computer Awareness
- Space Technology
CDS Elementary Mathematics Syllabus 2026
(Applicable only for IMA, INA & AFA candidates)
Arithmetic
- Number System
- HCF & LCM
- Percentage
- Profit and Loss
- Ratio and Proportion
- Partnership
- Average
- Time and Work
- Pipes and Cisterns
- Time, Speed and Distance
- Simple Interest
- Compound Interest
- Mixtures and Alligation
Algebra
- Linear Equations
- Quadratic Equations
- Polynomials
- Factorization
- Algebraic Identities
- Surds and Indices
Geometry
- Lines and Angles
- Triangles
- Quadrilaterals
- Circles
- Similarity
- Congruency
- Pythagoras Theorem
Mensuration
- Areas
- Perimeter
- Surface Area
- Volume
- Cube
- Cuboid
- Cylinder
- Cone
- Sphere
Trigonometry
- Trigonometric Ratios
- Identities
- Heights and Distances
- Angles
Statistics
- Mean
- Median
- Mode
- Bar Graphs
- Pie Charts
- Data Interpretation
Check Other Links
SSB Interview Syllabus
Candidates who qualify the written examination appear for the 5-day SSB Interview.
Stage I
- Officer Intelligence Rating Test (OIR)
- Picture Perception and Description Test (PPDT)
Stage II
Psychological Tests
- Thematic Apperception Test (TAT)
- Word Association Test (WAT)
- Situation Reaction Test (SRT)
- Self Description Test (SD)
Group Testing Officer (GTO) Tasks
- Group Discussion
- Group Planning Exercise
- Progressive Group Task
- Half Group Task
- Individual Obstacles
- Command Task
- Final Group Task
Personal Interview
Conference
Best Books for CDS 2026
| Subject | Recommended Books |
|---|---|
| English | Objective General English by S.P. Bakshi |
| GK | Lucent General Knowledge |
| History | Spectrum Modern India |
| Polity | Indian Polity by M. Laxmikanth |
| Geography | NCERT + G.C. Leong |
| Mathematics | Quantitative Aptitude by R.S. Aggarwal |
CDS Preparation Strategy 2026
Daily Study Plan
| Subject | Time |
|---|---|
| English | 1 Hour |
| General Knowledge | 2 Hours |
| Mathematics | 2 Hours |
| Current Affairs | 1 Hour |
| Mock Tests | 1 Hour |
Expert Tips
✅ Read newspapers daily.
✅ Practice previous year papers.
✅ Focus on English vocabulary.
✅ Revise current affairs monthly.
✅ Attempt weekly mock tests.
✅ Prepare simultaneously for SSB.
✅ Improve physical fitness regularly.
Frequently Asked Questions (FAQs)
Is CDS Maths compulsory?
Mathematics is compulsory only for IMA, INA, and AFA candidates. OTA candidates do not have a Mathematics paper.
Is there negative marking in CDS?
Yes. One-third of the marks assigned to a question are deducted for every wrong answer.
What is the level of Mathematics in CDS?
The Mathematics syllabus is based on the Class 10 standard.
How many stages are there in CDS selection?
The selection process includes the Written Examination, SSB Interview, and Medical Examination.
Is the syllabus for CDS 1 and CDS 2 the same?
Yes. Both CDS 1 and CDS 2 examinations have the same syllabus and exam pattern.
Official Links
The CDS examination remains one of India’s most prestigious defence examinations and provides a direct pathway to becoming a commissioned officer in the Indian Armed Forces.
Frequently Asked Questions (FAQs)
What subjects are included in CDS Syllabus 2026?
The CDS Syllabus 2026 includes English, General Knowledge, and Elementary Mathematics. For OTA candidates, only English and General Knowledge are included.
Who conducts the CDS Examination?
The Combined Defence Services Examination is conducted by the Union Public Service Commission (UPSC).
How many times is the CDS examination conducted in a year?
The CDS examination is conducted twice every year by UPSC.
Is there negative marking in the CDS Examination?
Yes, one-third of the marks assigned to a question are deducted for every incorrect answer.
What is the selection process for CDS 2026?
The selection process includes a Written Examination, Services Selection Board Interview, and Medical Examination.
Can female candidates apply for CDS?
Yes, female candidates are eligible for certain entries such as Officers Training Academy (OTA).
Which books are best for CDS Preparation?
Some of the best books for CDS preparation include:
- Objective General English by S.P. Bakshi
- Quantitative Aptitude by R.S. Aggarwal
- Lucent’s General Knowledge
- Objective Mathematics by R.D. Sharma
- Pathfinder CDS Solved Papers