Semper Fi

Semper fidelis (Latin pronunciation: [ˈsɛmpɛr fɪˈdeːlɪs]) is a Latin phrase that means "always faithful" or "always loyal" (Fidelis or Fidelity). It is the motto of the United States Marine Corps, usually shortened to Semper Fi. It is also in use as a motto for towns, families, schools, and other military units.