Quitting? What Article of the UCMJ covers that>
The one used to get those refusing the anthrax vax in the 1990s was Article 134 of the UCMJ. If your CIC, commanding general, Captain or platoon LT orders you to take a vaccine and you refuse you are automatically in violation of Article 134 and will be court marshalled I was in the CID and had a number of cases for refusal of the anthrax every one of them was given at least a BCD some where given a dishonorable discharge. You lose your right to own a firearm with a dishonorable as well as the right to to vote for life. One must obey a lawful order it is that simple. In the case of a FDA approved vaccine when ordered to take it that is a lawful order comply or be court marshalled.
10 U.S. Code § 934 - Art. 134. General article
U.S. Code
Though not specifically mentioned in this chapter, all disorders and neglects to the prejudice of good order and discipline in the armed forces, all conduct of a nature to bring discredit upon the armed forces, and crimes and offenses not capital, of which persons subject to this chapter may be guilty, shall be taken cognizance of by a general, special, or summary court-martial, according to the nature and degree of the offense, and shall be punished at the discretion of that court. As used in the preceding sentence, the term “crimes and offenses not capital” includes any conduct engaged in outside the United States, as defined in section 5 of title 18, that would constitute a crime or offense not capital if the conduct had been engaged in within the special maritime and territorial jurisdiction of the United States, as defined in section 7 of title 18.
(Aug. 10, 1956, ch. 1041, 70A Stat. 76; Pub. L. 114–328, div. E, title LX, § 5451, Dec. 23, 2016, 130 Stat. 2958.)