The Army said Thursday it will immediately begin discharging soldiers who have refused to get the mandatory Covid-19 vaccine, putting more than 3,300 service members at risk of being thrown out soon.

The Army's announcement makes it the final military service to lay out its discharge policy for vaccine refusers. The Marine Corps, Air Force and Navy have already discharged active-duty troops or entry-level personnel at boot camps for refusing the shots. So far, the Army has not discharged any.