Hello,

There are limited scope to join army after finishing graduation in physiotherapy.

There are a few counted options :-

1. For Army / Navy/ IAF: You will have to write CDSE.
2. For Para- military forces: You have to qualify CAPF written and interview.
3. And you can also choose to be a part of prestigious IPS cadre after qualifying UPSC.

Hope this helps you.

Good luck!