What kind of stuff did he and your dad get "due to serving"?
The way I see military jobs, they are exactly like any other civilian job. You take the job, you accept the risks, and you perform as required. There are many civilian jobs that are tough on the body and health as well. You get old, you get sick, that's life. It happens to military vets it happens to civilians too. I don't see where the sense of entitlement comes from with people from the military.
I understand and appreciate the aspect of "serving the country" but to be quite honest I think that kind of thinking was more applicable in the days of conscription. Now that everything is a voluntary basis I feel a military job is quite similar to almost any other job, it's just that the employer is a different and their pensions/benefits really are better than average.