Hi sushant,

MDS  is master of dental surgery

And MNS is military nursing service



But i think to get into the military through medical.

You should give the NEET first and then AFMC ( best route).

As there is reservation for boys about 85% to 90%.

After NEET you have to go through 80 marks ( written test)  and 50 marks ( personal interview).

If you score incredible you will be in military.

Hope this helps.

Thank you.