Hello again Stephen and thank you for the additional information. I am sorry to read about the loss of your father. The term "layoff" is really a misnomer in this situation where there is no union and also because it sounds like you were actually no longer employed after you took time for your personal issues at home. The reason why that matters is that if you had been given an official leave of absence with a firm return date you would still be entitled to your job back. However, if you were let go completely and no longer an employee there would be no right to reinstatement without seniority or bumping rights.
So, then the issue becomes whether you are being passed over because
you are a Veteran or because you have a disability. In either of those cases, that would be unlawful. However, if the reason is something else, like personality conflicts, or someone they think is a better fit, job wise, then that would not be unlawful.
You though can certainly file a disability and Veteran discrimination complaint with the Kentucky Human Rights Commission and/or the EEOC
if you believe that your status as a Veteran or your PTSD is the reason you are not being rehired. You would want to also sit down with a local employment law
attorney who can assist you locally in asserting your rights and helping you decide if you want to file suit or let the agencies I mentioned try to resolve this for you.
Please let me know if you need any clarification. I would be glad to assist you further if I can.