Any service related injury should be enough to get VA benefits. I was told to go to the VA and have my hearing checked and see if I was qualified for benefits, but have better hearing than many 20 yr olds.
I can still see bullet hole stikes at 25 meters, so no use to try for benefits. I have TRICARE Prime from my military service and it is working fine for us.
A relative of mine was retired Air Force and he used the VA health system for 30 years until he went into a nursing home and began receiving treatment at a private hospital which was close to the nursing home. The VA facility was many miles away.