Semper - Fi

"The motto of the Marine Corps is Semper Fidelis, Latin
for "always faithful" .Until 1871 it was "First to Fight",
a motto that still applies. Through the years, Marines have
shortened it to Semper Fi, and "Semper Fi, Mac" is the universal
Marine Greeting."

Source(s):

google is my friend

Kent says:
SEMPER-FI to the Marines in the world!