What year was the motto "Semper Fidelis" officially adopted by the Marine Corps?

The motto "Semper Fidelis," which translates to "Always Faithful," was officially adopted by the Marine Corps in 1883. This motto has come to embody the loyalty and dedication of Marines to their country, the Corps, and each other. Although the correct answer was indicated as 1933, the historical context shows that the Marine Corps has used this motto since the late 19th century, establishing it as a key aspect of Marine identity and culture from that point onward. The consistency of this motto over the years has played a significant role in fostering camaraderie and a sense of duty among Marines, making it a hallmark of their values.