General Requirements: 

To join N.D.A., an aspirant must appear N.D.A. written entrance exam conducted by UPSC (Union Public Service Commission). It is a national level examination, which is organized two times in a year, i.e. N.D.A. 1 and N.D.A. 2, generally, in April and September to recruit new cadets for Indian Army, Navy and Air Force and the aspirants have to meet certain educational as well as physical eligibility criteria. Physical Requirements Joining NDA Course The candidate must be in good physical and mental health and free from any disease/disability that is likely to interfere with military duties' efficient performance. There should be no evidence of weak constitution, bodily defects or underweight. Physical Standards The minimum acceptable height is 157 cms (162.5 cms. for Air Force). Weight: minimum – 50 kgs The chest should be well developed. A fully expanded chest should not be less than 81 cms. The minimum range of expansion after full inspiration should be 5 cms. Visual Standard Distance Vision (Corrected) ----------- Better Eye 6/6; Worse Eye 6/9 Uncorrected without glass--------------- 6/6, 6/9 Candidates who habitually wear spectacle---- Not eligible for Air Force Myopia should not be more than -2.5D, including Astigmatism and manifest Hypertrophy not more than +3.5D, including Astigmatism. Colour vision ----------------------------- CP-III (Defective Safe). CONCLUSION: There is no better joy than the joy of serving the nation. The valour, pride and the feeling of fulfilment for a purpose to safeguard the nation is itself an indescribable benefit of being a part of the army. There are other perks of it like : Job security : Going through rigorous training and placement, Job security is something that is needed for the hour. There is thus job security throughout the tenure one is serving the army. Postretirement benefits - Acknowledgement and immense respect, a regular pension are some of the postretirement benefits. Family Security is one of the most important things. It is taken care of by various security programs from the army personnel to safeguard their family in terms of health, education, and more.