From the Document: "Since the onset of the Coronavirus Disease 2019 (COVID-19) pandemic, Members of Congress have expressed interest in Force Health Protection [hyperlink] (FHP) measures the Department of Defense (DOD) might implement to protect servicemembers and mitigate pandemic-related threats to military operations. DOD has implemented a variety of conditions-based FHP [hyperlink]measures that mirror the U.S. Centers for Disease Control and Prevention's recommended protective measures [hyperlink], to limit the spread of COVID-19 among military personnel. On August 9, 2021, the Secretary of Defense (SECDEF) issued a Message to the Force [hyperlink] indicating his intent to require COVID-19 vaccination for servicemembers 'no later than mid-September, or immediately upon the U.S. Food and Drug Administration (FDA) licensure [of a COVID-19 vaccine], whichever comes first.' [...] This Insight summarizes the COVID-19 vaccination mandate for servicemembers and offers considerations for Congress as the MILDEPs [Secretaries of the Military Departments] implement the mandate. For an overview of DOD's vaccination policy and program, see CRS [Congressional Research Service] InFocus 11816 [hyperlink]."
CRS Insight, IN11764
Congressional Research Service: https://crsreports.congress.gov/