Let me tell you a true story. I didn’t served in US Army but in IDF. In 1982, while in Lebanon, I refused order from one of the highly ranking officers on the grounds that it will cause high casualties among my soldiers. I was facing court martial and was ready to go to military jail. I knew that I made a right decision so I could care less. To make it short, my punishment was reversed by the Chief of Stuff himself and later I was awarded “Chief of Stuff Citation” for saving dozens of lives. Few weeks later the officer who sent me to jail was demoted.
Good on you, as you did the right thing. You refused an order to save lives, and you kept in your chain of command...very admirable.
These men have not been given any illegal orders. If orders are given they find to be illegal, they can refuse them. They cannot issue political statements in uniform. They are making political statements about hypothetical orders.