UPSC Combined Defense Service CDS I Examination 2025 – Apply Online UPSC CDS I for 457 Post

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The Union Public Service Commission: UPSC has released the official Notification for the National Defense CDS Examination 2025. here all information of the UPSC Combined Defense Services (CDS) Examination (I) 2025 . You will get here complete detail about UPSC Combined Defense Services (CDS) Examination (I) 2025  . Interested and eligible candidate to this recruitment can apply online from 11/12/2024 to 31/12/2024 . official notification for recruitment eligibility, post information, selection procedure, age limit, pay scale and all other information given below .

REET 1 REET 1 UPSC Combined Defense Service CDS I Examination 2025 - Apply Online UPSC CDS I for 457 Post

Basic Information for UPSC Combined Defense Services (CDS I) 2025

Field Details
Name of the Organization Union Public Service Commission (UPSC)
Name of the Post Indian Military Academy (IMA), Indian Naval Academy (INA), Air Force Academy, Officers Training Academy (OTA), OTA (Women)
Total No of Vacancies 457 Posts
Exam Date 21 April 2025
Application Mode Online
Official Website UPSC Official Website

Vacancy Details of UPSC Combined Defense Services (CDS I)

Post NameTotal PostsAge LimitEligibility
Indian Military Academy (IMA)10002/01/2002 to 01/01/2007Bachelor’s Degree in Any Stream from a Recognized University
Indian Naval Academy (INA)3202/01/2002 to 01/01/2007Bachelor’s Degree in Engineering from a Recognized University
Air Force Academy3202/01/2002 to 01/01/2006Bachelor’s Degree in Any Stream with Physics, Math at 10+2 Level OR Bachelor’s Degree in Engineering
Officers Training Academy (OTA)27502/01/2001 to 01/01/2007Bachelor’s Degree in Any Stream from a Recognized University
OTA (Women)1802/01/2001 to 01/01/2007Bachelor’s Degree in Any Stream from a Recognized University


CDS (I) 2025 – Course Details & Vacancies

S.No.Name of the CourseApproximate Number of VacanciesRemarks
1.Indian Military Academy (IMA), Dehradun – 160th (DE) Course (January 2026)100Including 13 vacancies reserved for NCC ‘C’ Certificate (Army Wing) holders.
2.Indian Naval Academy (INA), Ezhimala – Executive Branch (General Service)/Hydro (January 2026)32Including 06 vacancies for NCC ‘C’ Certificate (Naval Wing) holders.
3.Air Force Academy (AFA), Hyderabad – Pre-Flying Training Course (January 2026)32Including 03 vacancies reserved for NCC ‘C’ Certificate (Air Wing) holders through NCC Special Entry.
4.Officers’ Training Academy (OTA), Chennai – 123rd SSC (Men) (NT) Course (April 2026)275
5.Officers’ Training Academy (OTA), Chennai – 37th SSC Women (NT) Course (April 2026)18

How to Apply for UPSC CDS I 2025

  • Ensure all information is accurate to avoid complications with your application.
  • Visit the Official Website:
  • Go to the official UPSC application portal: upsconline.gov.in.
  • Register Online:
  • One-time registration is required. Once registered, candidates can apply for any UPSC examination throughout the year.
  • If you are already registered, proceed to the application form for the CDS (I) 2025 examination.
  • Filling the Online Application Form:
  • Provide accurate details like:
  • Date of Birth
  • Educational Qualification
  • Any other claims as per the application requirements.
  • Ensure all information is correct before submission, as incomplete or incorrect forms may lead to the cancellation of candidature.
  • Submit Supporting Documents:
  • Along with the application, candidates need to upload supporting documents, including:
  • Date of Birth Proof
  • Educational Qualification Proof
  • Other Claims as required by the Commission.
  • Modification in Registration Profile:
  • Modification allowed only once in a lifetime after registration.
  • The option to change your Registration Profile data will be available until 7 days after the closure of the first application for any UPSC exam.
  • For CDS (I) 2025, the modification window will close on January 7, 2025.
  • Modification in Application Form (Post-Submission):
  • After the application window closes on December 31, 2024, candidates will have the opportunity to make corrections in their application form.
  • This correction window will be available from January 1 to January 7, 2025.
  • Any changes related to Registration Profile must be made in the Registration platform, not through the Application Form modification window.
  • No Withdrawal Option:
  • Once the application is submitted, candidates cannot withdraw their applications.
  • Upload Photo ID Card:
  • Candidates must provide details of one Photo ID Card (e.g., Aadhaar Card, Voter Card, PAN Card, Passport, Driving Licence).
  • Upload a scanned copy of the Photo ID along with your application.
  • The provided Photo ID will be used for reference during the Examination/Personality Test/SSB and must be carried by the candidate during all stages.
  • Important Notes:
  • Carefully read the notice for CDS (I) 2025 for detailed instructions on how to fill the form and submit the documents.

Steps to Apply Online for CDS (I) 2025:

After reviewing the application, submit it successfully and take a printout for future reference.

Visit the Official Website:

Go to upsconline.gov.in.

Registration Process:

Candidates must register online by filling in the required personal information.

Registration needs to be done only once in a lifetime, and can be completed anytime throughout the year.

Filling the Online Application:

After registration, proceed with filling the online application form for CDS (I) 2025.

Ensure you enter accurate details like date of birth, educational qualifications, and other necessary claims.

Submit Supporting Documents:

Provide all necessary supporting documents as per the requirements, such as:

Proof of date of birth.

Proof of educational qualifications.

Documents should be uploaded alongside the online application form.

Application Submission:

Complete the form, check all the entered details carefully, and submit the application.

The Commission will reject applications missing required information or documents.

Correction Window:

If any mistake is found in the application, the correction window will allow candidates to make changes before final submission.

Failure to update required information within this window can lead to cancellation of candidature.

Final Submission:

Important Date of UPSC CDS I 2025

UPSC CDS I 2025 Important Dates
Event Date
Application Started Date 11/12/2024
Last Date of Apply Online 31/12/2024 Till 06:00 PM
Fee Payment Last Date 31/12/2024
Modify / Edit Form 01-07 January 2025
UPSC CDS I 2025 Exam Date 13/04/2025
Admit Card Available Before Exam
Result Declared Notified Soon
CDS (I) 2025 Important Links
Action Link
Apply Online for CDS (I) 2025 Apply Now
Download CDS (I) 2025 Notification Download
Official Website Register Now


CDS (I) 2025 – Examination Centers

S.No.Examination Centers
1.AGARTALA
2.AGRA
3.AJMER
4.AHMEDABAD
5.AIZAWL
6.ALIGARH
7.ALMORA (UTTARAKHAND)
8.ANANTPUR (ANDHRA PRADESH)
9.CHHATRAPATI SAMBHAJINAGAR (AURANGABAD)
10.JABALPUR
11.BENGALURU
12.BAREILLY
13.BHOPAL
14.BILASPUR (CHHATISGARH)
15.CHANDIGARH
16.CHENNAI
17.COIMBATORE
18.CUTTACK
19.DEHRADUN
20.DELHI
21.DHARAMSHALA
22.DHARWAD
23.DISPUR
24.FARIDABAD
25.GANGTOK
26.GAYA
27.GAUTAM BUDDH NAGAR
28.GHAZIABAD
29.GORAKHPUR
30.GWALIOR
31.HYDERABAD
32.IMPHAL
33.INDORE
34.ITANAGAR
35.JAMMU
36.JAIPUR
37.JODHPUR
38.JORHAT
39.KARGIL
40.KOCHI
41.KOHIMA
42.KOLKATA
43.LEH
44.LUCKNOW
45.LUDHIANA
46.MADURAI
47.MANDI
48.MUMBAI
49.NAVI MUMBAI
50.NAGPUR
51.PATNA
52.PANAJI (GOA)
53.PUDUCHERRY
54.PUNE
55.RAIPUR
56.RAJKOT
57.RANCHI
58.SHILLONG
59.SILIGUDI
60.SRINAGAR
61.THANE
62.THIRUVANANTHAPURAM
63.TIRUCHIRAPALLI
64.TIRUPATI
65.UDAIPUR
66.VARANASI
67.VELLORE
68.VIJAYAVADA
69.VISHAKHAPATNAM



CDS (I) 2025 – Scheme of Examination

For Admission toSubjectCodeDurationMaximum Marks
Indian Military Academy, Indian Naval Academy, Air Force AcademyEnglish112 Hours100
General Knowledge122 Hours100
Elementary Mathematics132 Hours100
Officers’ Training AcademyEnglish112 Hours100
General Knowledge122 Hours100

Key Points:

  • Written Examination: The exam consists of objective-type questions only.
  • Duration for Each Subject: 2 hours.
  • Maximum Marks: 300 for Indian Military Academy, Indian Naval Academy, and Air Force Academy; 200 for Officers’ Training Academy.
  • Language of Papers: The papers in General Knowledge and Elementary Mathematics will be available in both English and Hindi.
  • Important Notes:
    • No use of calculators.
    • Candidates must write answers on their own.
    • The commission may set qualifying marks in any or all subjects.

This table helps candidates to better understand the exam structure for each course under the CDS (I) 2025.

UPSC CDS I 2025 – FAQ

Frequently Asked Questions (FAQ) – UPSC CDS I 2025

1. What is the application process for UPSC CDS I 2025?

The application process is entirely online. Candidates need to apply via the official UPSC website and complete the One-Time Registration (OTR) before filling the application form.

2. What is the last date to apply for UPSC CDS I 2025?

The last date to apply online is 31st December 2024 until 06:00 PM.

3. How many vacancies are available for the UPSC CDS I 2025 exam?

The total number of vacancies is 457 across different courses such as IMA, INA, AFA, OTA, and OTA (Women).

4. What is the exam date for UPSC CDS I 2025?

The UPSC CDS I 2025 exam is scheduled for 13th April 2025.

5. Can I modify my application form after submission?

Yes, you can modify your application form between 1st January 2025 and 7th January 2025. However, changes in your registration profile can only be made once during your lifetime.

6. What is the exam pattern for UPSC CDS I 2025?

The exam consists of three papers: English, General Knowledge, and Elementary Mathematics for IMA, INA, and AFA candidates. For OTA candidates, only English and General Knowledge papers will be conducted.

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