For example, In your 12th standard if you have appeared for NDA entry - Permanent Commission means, you cant able to get the travelling allowance for UES entry - Permanent commission. You can get the travellilng allowance only for your SSC(T) - Short Service Commission Technical or any Short Service Commission Courses only. So, you can travelling allowance only two times, first time for permanent commission and second time of short service commission. This is implemented only recently during May 2012 only. Source of information is SSC(T) - 39, Bhopal center dates of www.joinindianarmy.nic.in
NOTE:- So, have a perfect arrangements for money while going for selection.