The Chief of Defence Staff of the Indian Armed Forces (CDS) is the head of the military staff of the Indian Armed Forces and the chief executive of the Department of Military Affairs. As the highest-ranking serving officer in the Indian Armed Forces, the CDS is the commanding officer and chairperson of the Joint Commanders and Staff Committee – making him the chief military adviser to the government of India and the Ministry of Defence.

The Combined Defence Services Examination (abbreviated as CDS Exam) is conducted by the Union Public Service Commission for recruitment of Commissioned Officers in 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. Examination is conducted twice a year. Successful candidates are admitted into the respective Academies after an interview conducted by the Services Selection Board