The UPSC invites applications for the Combined Defense Services Exam with 459 vacancies across various branches, including the Indian Military Academy, Naval Academy, and Air Force Academy. Eligible unmarried males and females can apply online until June 4. The exam is on September 1, with centres in Kochi, Thiruvananthapuram, and Kozhikode. The application fee is Rs. 200, waived for women and scheduled castes. Courses start in July 2025. Detailed eligibility criteria and physical qualifications are available on the official UPSC website, www.upsconline.nic.in.