The CDSÂ (Combined Services Exam) is conducted by the UPSC for recruitment of Commissioned Officers in the Indian Military Academy, Officers Training Academy, Indian Naval Academy and Indian Air Force Academy. Generally, every year, in the months of December and May, the Notification for the examination comes out. The examinations are conducted in April and September respectively. Only unmarried graduates are eligible to sit for the exam. Examination is conducted twice a year. Successful candidates are admitted into the respective Academies after an interview conducted by SSB (Services Selection Board).