You can file the case in Armed Forces Tribunal, Chennai - since, Andhra Pradesh is placed under this Tribunal.
2. Without knowing what exactly your problem, unable to comment.
3. If you want any guidance, write to me to : firstname.lastname@example.org; I am a well wisher of Ex-SMs. So far, I won two cases in Supreme Court, two in Army Tribunals, presently conducting two in Supreme Court.
4. To any Appellate Authority, we can pray for condonation of delay with reasons.
5. So, Write to me for getting clearance of your doubts. Mohandoss.R.