When was the Marine Corps motto officially changed to "Semper Fidelis"?

The Marine Corps motto "Semper Fidelis," which translates to "Always Faithful" in Latin, was officially adopted in 1880. This motto reflects the high level of loyalty and commitment expected from Marines, not just to the Corps but also to their country and fellow service members. The choice of this phrase was intended to encapsulate the spirit of the Marine Corps and its core values, illustrating an enduring dedication that is a hallmark of Marine identity.

Understanding the historical context, prior to its adoption, the Marine Corps had not settled on a single motto, using various phrases to convey similar values. The adoption of "Semper Fidelis" helped to unify the Corps under a common guiding principle that continues to resonate among Marines to this day.