I am probably not Rachel Levine's biggest fan, but there is a common misconception that Levine was made a admiral in the US military/Navy. Levine was an admiral in the Public Health Services Comissioned Corps, one of two non- Armed Forces "uniformed services." Levine is/was not a member of the military, despite the rank and uniform.
Not sure if you thought Levine was was made a naval admiral, but certainly some on here do.