U.S.A has seven uni­formed ser­vices. That includes the army, navy, air force, marines, and also the National Oceanic and Atmospheric Administration Commissioned Corps. According to wikipedia:

The NOAA Commissioned Corps, estab­lished in 1917 as the Coast and Geodetic Survey Corps, and then as the Environmental Science Services Administration (ESSA) Corps from 1965–1970, traces its roots back to the former U.S. Coast and Geodetic Survey, which dates to 1807 under President Thomas Jefferson. Coast and Geodetic Survey offi­cers were com­mis­sioned so that under the laws of war, they could not be exe­cuted as spies if they were serving as sur­veyors on a battlefield.

Ranks go as high as Vice Admiral, although no one at NOAA cur­rently holds that rank. Perhaps if we finally go to war on cli­mate change?

Other U.S. uni­formed ser­vices: the Coast Guard and… United States Public Health Service Commissioned Corps, hence the posi­tion of Surgeon General (who is actu­ally a Vice Admiral).