I hope you find this helpful 🙂 Thank you The “Combined Defence Services” Examination (CDS) is conducted twice a year by the Union Public Service Commission for recruitment into the Indian Military Academy, Officers Training Academy, Indian Naval Academy and Indian Air Force Academy. The Notification for the examination is usually released in the months of October and June, and the examinations are conducted in February and November respectively. Only unmarried graduates are eligible to sit for the exam.
Successful candidates are dmitted into the respective Academies after an interview conducted by the Services Selection Board (SSB). Eligibility Criteria[l] For Indian Military Academy/Offcers’ Training Academy: Degree from a recognized university or equivalent For Naval Academy: Bachelor of Engineering For Air Force Academy: Degree of a recognized University with Physics and Mathematics at 10+2 level or Bachelor of Engineering Bachelor of Technology Age Limit Indian Military Academy 19-24 years Air Force Academy 19-23 Years Naval Academy 19-22 years 
Officers’ Training Academy 19-25 years (not before 2 June) Scheme of Examination Indian Military Academy / Air Force Academy / Naval Academy All the papers are of objective type. Subject Marks English 100 General Knowledge 100 Elementary Mathematics 100 Total 300 Officers’ Training Academy Total 200 Candidates successful in the written exam are then called for an interview by a Services Selection Board which evaluates a candidate’s suitability for a career in the a candidate undergoes various physical and psychological tests to ascertain whether r not he is officer material.
Apart from SSB interview, Air Force academy candidates are tested for Pilot Aptitude Battery test [PAST]. After these tests, candidates undergone medical examination before finally admitted into the above mentioned academies, and after successful completion of training, they are inducted into the armed forces. Armed forces offer very exciting career to young men and women in several fields. Career in the forces, in addition as a career, is also an adventure in itself.
To ensure hat appropriate candidates are chosen, a comprehensive selection process is adopted by the armed forces through Service Selection Board (SSB) interview. This system of selection is based on the “trait theory’ of leadership which assumes that every leader must have some specific and pre-determined leadership traits. It also presumes that such traits can be acquired by a candidate with the passage of time meaning thereby that a person once rejected in an SSB interview is likely to succeed if he acquires some of the traits with the passage of time.
The present system of selection, although is long and takes four to five days, is thus based on an objective assessment of each candidate in which the qualities like initiative, alertness, judgement, courage, physical fitness endurance, cooperation, group planning, decisiveness,knowledge, etc. are Judged. In addition, psychological and mental robustness of the candidate vis-a-vis requirements of the Armed Forces is Judged and finally an overall assessment of the personality of a candidate is made by way of an exhaustive personal interviews.