DoD has issued guidance to all military entities to take immediate steps to vaccinate all members of the US Armed Forces, including the National Guard and Reserves. The memo, dated August 24, 2021, can be accessed at the following link:

https://media.defense.gov/2021/Aug/25/2002838826/-1/-1/0/MEMORANDUM-FOR-MANDATORY-CORONAVIRUS-DISEASE-2019-VACCINATION-OF-DEPARTMENT-OF-DEFENSE-SERVICE-MEMBERS.PDF