To join a defence academy in India, candidates must meet specific eligibility criteria set by the respective armed forces. Generally, applicants should be Indian citizens, have completed 10+2 education for NDA or equivalent qualifications for other entries like CDS or AFCAT. Age limits vary: for NDA, it's 16.5 to 19.5 years, while CDS requires candidates to be between 19 and 24 years. Physical fitness, medical standards, and a strong academic background are crucial. Aspiring candidates should also clear written exams followed by SSB interviews. Preparing for such competitive exams requires expert guidance, and enrolling in the best nda coaching in Delhi can significantly improve success chances. These coaching centers offer comprehensive training, mock tests, and experienced mentors, helping students excel in every stage of the selection process. For a solid foundation and focused preparation, choosing the best defence coaching in Dehradun is a smart first step toward a successful defence career.