Semper Fidelis is Latin for "Always Faithful". Well known in the United States of America as the motto of the United States Marine Corps (and often shortened toSemper Fi in Marine contexts), "Semper fidelis" has served as a slogan for many families and entities, in many countries, dating at least as far back as the 14th century. Within the groups below, users are listed in chronological order according to when they are believed to have adopted the motto; however, in many cases dates of adoption are not well established.