"Always Faithful", the U.S.Marine Corps motto is sometimes shortened to "Semper" this
[DOC] [TLE] Military Dogtags Ideas [PAR] Be All You Can Be (U.S. Army recruiting slogan (1980-2001)) ... Surname; First 
Name, Initial (sometimes just first and last initial), Blood ... Semper Fi Dogtags: '
Semper Fidelis' is Latin for 'Always Faithful.'