If the vaccine is unsafe why would it be pushed to military members?

To elaborate on my post, I am military as well and we weren’t forced to get the vaccine but we were “highly encouraged” to get it. I had symptoms from the second shot as a lot of others did as well. Could the vaccine be a long play basically they come out and say you have to get a boster every x amount of years or you could potentially die? Therefore giving the powers that be a hold on military members to follow their rules or not get your booster and die? I regret getting the shot and how I don’t believe what I mentioned is likely or true so have a lot of other things I have found out, which has put a little thought in the back of my mind...

If the vaccine is unsafe why would it be pushed to military members?