Hey

to join navy, you need btech/ BE in EEE or Mech or ECE or civil.

and you have to clear ssb.

but for army, you can have whatever degree you need. including, be, btech, ba, bsc and whatever you can.

you only need a basic bachelors degree to join army.

but for navy, you need only Btech or Be (but which ever branch is ok)