Unfortunately some people who survived the original covid were fired for not getting the vaccine which we now know they didn't need. I personally know someone being processed out of the Air Force for not getting the vaccine. He has a positive covid test and antibody test from being infected.
This is unfortunate - but when you decide to join the military you agree to follow orders and even back in the 70's when my friends were getting drafted getting vaccinated to protect yourself ant others was a part of the process. - - private sector is a completely different matter, but in the military you do what you are told or you pay the price