Translated from Latin, Semper Fidelis means "Always Faithful." U.S. Marines use an abbreviated verbal version, "Semper Fi," to voice loyalty and commitment to their Marine comrades-in-arms.
Previous mottos of the Marine Corps were
(1) To the Shores of Tripoli, adopted in 1805;
(2) Fortitude, adopted in 1812;
(3) From the Halls of Montezuma to the Shores of Tripoli, adopted in 1848;
and
(4) By Sea and by Land, adopted in the 1850's.
I Love those Precious Pics, Dubya!