UPSC CDS (I): Exam Date, Notification & Latest Update

UPSC CDS (I) 2027: Who Should Apply, What the Job Involves, and How It Compares

Overview: what CDS (I) 2027 recruits for

The UPSC conducts the CDS examination twice a year—CDS (I) in April and CDS (II) in September—on behalf of the Ministry of Defence. The examination recruits for three academies: the Indian Military Academy (IMA) in Dehradun, the Indian Naval Academy (INA) in Ezhimala, and the Air Force Academy (AFA) in Dundigal. Additionally, the Officers’ Training Academy (OTA) in Chennai trains candidates for short-service commissions in the Army and Air Force. The IMA, INA, and AFA offer permanent commissions, while the OTA offers short-service commissions of up to 14 years, with the possibility of extension or permanent commission based on performance.

Candidates who clear the prelims, mains, and SSB interview are admitted to the respective academies for rigorous training lasting 12–18 months, depending on the branch. Upon commissioning, officers are posted to operational units, staff appointments, or training establishments. The career progression is structured: after 5–7 years, officers can compete for higher command courses, and after 15–20 years, they may be considered for staff appointments at the brigade or divisional level. The key difference from civil services is the operational nature of the role—officers are expected to lead troops in the field, not administer districts.

Stages of the exam: what happens at each step

The preliminary examination is a single objective-type paper testing English and general knowledge. The mains examination varies by academy: the IMA and OTA (Army) have a mathematics paper and a general knowledge paper, while the INA and AFA have an additional paper in physics or chemistry. The SSB interview is a five-day assessment of personality, leadership potential, and mental robustness, conducted at one of the SSB centres in Allahabad, Bhopal, or Kapurthala.

The preliminary examination is a qualifier; candidates who clear the cut-off proceed to the mains. The mains examination is discipline-specific, and the SSB interview is pass-fail. The final merit list is compiled by aggregating the mains and SSB scores, with the prelims acting as a qualifier only. The entire process, from notification to final selection, spans approximately 12–15 months.

Vacancies and competition: how many seats are there?

Historically, the IMA sees around 100–150 vacancies per cycle, the INA around 30–50, the AFA around 30–40, and the OTA (Army) around 150–200. The OTA (Women) has seen an increase in recent years, reflecting the growing participation of women in the Armed Forces. The competition ratio for CDS typically ranges from 1:10 to 1:15 for the IMA and INA, while the OTA sees a higher ratio due to the absence of a mathematics paper in the mains. The exact figures will be published in the notification, and candidates should treat these as the definitive benchmark for their preparation intensity.

For context, the number of vacancies in CDS is significantly lower than in the civil services (UPSC CSE) or state PCS exams. This means that even a small improvement in performance can make a substantial difference in the final merit list. Candidates should also note that the vacancies are distributed across branches (e.g., Army Engineering, Navy Executive, Air Force Flying), and the competition for technical branches is often higher due to the additional academic requirements.

Eligibility: who can apply for CDS (I) 2027?

For the IMA, INA, and Air Force Academy, candidates must hold a bachelor’s degree in a relevant discipline, while the OTA requires a degree in any stream. The notification will also specify the age brackets for each academy and any relaxations for reserved categories. For example, the IMA typically requires candidates to be between 19 and 24 years old, while the OTA has a slightly wider age bracket.

Nationality is a key criterion: candidates must be unmarried male or female citizens of India, or subjects of Nepal/Bhutan, or Tibetan refugees settled in India before 1962. Candidates should verify these details against their own profile before applying, as ineligibility discovered post-selection is irreversible. The notification will also outline the medical standards, which are non-negotiable; any history of colour blindness, ear issues, or musculoskeletal conditions can lead to disqualification at the SSB stage.

Syllabus and paper structure: what you need to know

The preliminary examination tests English language skills and general knowledge, with a focus on current affairs and defence-related developments. The mains examination for the Army consists of elementary mathematics and general knowledge, while the Navy and Air Force add a second paper in physics or chemistry. The key is to align preparation with the specific demands of each paper:

• English (Prelims) — Vocabulary, grammar, comprehension, and précis writing.
• General Knowledge (Prelims & Mains) — Static GK (history, polity, geography, economy), current affairs (national and international), and defence-related developments.
• Mathematics (Mains, Army) — Algebra, trigonometry, geometry, mensuration, and statistics.
• Physics/Chemistry (Mains, Navy/Air Force) — Core concepts from Classes 11–12, with an emphasis on problem-solving.

Candidates should use UPSC CDS mock tests on Examophobia to simulate exam conditions and identify weak areas. The mains papers are time-bound, and cand