Semper Fidelis is a Latinmotto translating to "always faithful". It is the motto of:
The City of Exeter, in Devon, England; the motto signifies the city's loyalty to the English Crown, and was suggested by Elizabeth I in a letter of 1588 to "The Citizens of Exeter", in recognition of a gift of money towards the fleet that defeated the Spanish Armada.
The United States Marine Corps, the ground fighting element of the United States Navy, who often reduce it to Semper Fi; the motto signifies the dedication that individual Marines have to the Corps and to their fellow fighting men and women, for the rest of their days and beyond.