They intended to change into their mourning clothes and turn their backs to switch allegiance directly on the spot in case Lord Wade truly refused to submit and admit defeat when the time came. They would also agree to all of Ten Thousand Armies’ requirements on the spot, then.
In any case, their lives were the most important.
Jeremiah did not have any confidence in his heart either. He could only gather everyone so that they could head up to Mount Wintry first while he placed all of his hopes