It’s an UNLAWFUL ORDER!!!!
All unlawful orders are void.
Does UCMJ say anything about what constitutes an unlawful order?
Sadly I doubt this rises to whatever standard there is because “unlawful” is different than “lawful that I just don’t like”.
I would like for someone to point me to where unlawful orders are void, and also explain why the present vaccine mandate is unlawful. That way I can give folks some ammunition to work with.