This administration might be the exception, but it is actually normal for the US military to be getting more vaccines than average, even when their effectiveness is suspect (some past flu vaccines) or side effects are moderate to severe (e.g. anthrax vaccines).
Readiness - a matter of national security - tends to trump most concerns that, in civilian populations, might warrant greater choice and debate.
There is (was?) a mandatory list of vaccines all military had to receive upon enlisting.
You'd think other aspects of health, like general fitness and mental well-being would be factored in too, but strangely, the only requirement they seemed to take a hard stance on previously was over-vaccination.
Almost like it was politically-motivated and it's not truthfully a "matter of national security"
It’s common sense for any congregate housing arrangement