After 12th you can join Indian Army through the rally which is organised by Indian Army throughout the year at various locations. In the rally, they select soldiers for Ground duty, clerk, store keeper, cook etc. The rally is organised by Indian Army and one can participate. In rally one has to clear the run first, then Height, weight etc. Those who pass these has to undergo written exam once they clear they will be asked for medical examination. To get into another entry that is 10+2 ssc a direct entry where Candidates are shortlisted according their percentage for attending SSB interview and those clear that has to appear for medical and a Btech degree is given after completing if course. For Navy 10+2 Btech entry , Sailor entry and in AirForce group X and Y entry. These are the way you can join the Armed forces after 12th.