Army recruits get up to seven vaccines during basic training and at least four more when assigned overseas. The list includes flu and booster shots and the last time I looked it's not an option or debatable and neither getting a coronavirus vaccination. 

That's from the bone spur effect and now Republican Governors believe they can dictate Army regulations. Gov. Kevin Stitt is one of 42 Governors with no military service.

Can't imagine telling General Patton during WWII "can't fight today, I have flu like systems".