Navy Officers: http://www.npc.navy.mil/Boards/GeneralBoardInfo/

Navy Enlisted: http://www.npc.navy.mil/Boards/ActiveDutyEnlisted/CPO+Selection+Boards.htm

Marine Corps Officer/Enlisted: https://www.manpower.usmc.mil Upon opening the website; click under career/marine/and then click on either officer or enlisted promotion

Coast Guard Officer: http://www.uscg.mil/hq/cgpc/opm/opmmain.htm

Coast Guard Enlisted: http://www.uscg.mil/hq/cgpc/epm/default.html