▁to ▁as ▁the ▁Commission ed ▁Corps ▁of ▁the ▁United ▁States ▁Public ▁Health ▁Service , ▁is ▁the ▁federal ▁uniform ed ▁service ▁of ▁the ▁U . S . ▁Public ▁Health ▁Service ▁( P HS ), ▁and ▁is ▁one ▁of ▁the ▁eight ▁uniform ed ▁services ▁of ▁the ▁United ▁States . ▁The ▁commission ed ▁corps ' ▁primary ▁mission ▁is ▁to ▁the ▁protection , ▁promotion , ▁and ▁adv ancement ▁of ▁health ▁and ▁safety ▁of ▁the ▁general ▁public . ▁ ▁Al ong ▁with ▁the ▁NO AA ▁Commission ed ▁Officer ▁Corps , ▁the ▁Public ▁Health ▁Service ▁Commission ed ▁Corps ▁is ▁one ▁of ▁two ▁uniform ed ▁services ▁that ▁consist ▁only ▁of ▁commission ed ▁officers ▁and ▁has ▁no ▁en list ed ▁or ▁war rant ▁officer ▁ranks , ▁although ▁war rant ▁officers ▁have ▁been ▁author ized ▁for ▁use ▁within ▁the ▁service . ▁Offic ers ▁of ▁the ▁commission ed ▁corps ▁are ▁class ified ▁as ▁non com bat ants , ▁unless ▁directed ▁to ▁serve ▁as ▁part ▁of ▁the ▁military ▁by ▁the ▁President ▁or ▁detailed ▁to ▁a ▁service ▁branch ▁of ▁the ▁military . ▁M embers ▁of ▁the ▁commission ed ▁corps ▁wear ▁the ▁same ▁uniform s ▁as ▁the ▁United ▁States ▁Navy , ▁or ▁the ▁United ▁States ▁Coast ▁Guard ▁( when ▁assigned ▁to ▁the ▁Coast ▁Guard ), ▁with ▁special ▁P HS ▁Commission ed ▁Corps ▁ins ign ia , ▁and ▁hold ▁naval ▁ranks ▁equivalent ▁to ▁officers ▁of ▁the ▁U . S . ▁Navy ▁and ▁U . S . ▁Coast ▁Guard . ▁Commission ed ▁corps ▁officers ▁typically ▁receive ▁their ▁comm issions ▁through ▁the ▁commission ed ▁corps ' s ▁direct ▁commission