NDA Officer Career Path – Complete Guide The National Defence Academy (NDA) is the gateway to becoming an officer in the Indian Army, Navy, or Air Force. Every year, thousands of young aspirants dream of wearing the uniform and serving the nation with pride. But to achieve this, one must understand the career path of an NDA officer and the dedication required at every stage. 1. NDA Entry Process Candidates can apply for NDA after completing 10+2 (PCM required for Navy & Air Force). Selection involves Written Exam (UPSC NDA) followed by SSB Interview. Medical fitness and merit list decide the final selection.