Which battle is famously associated with the Marine Corps motto "Semper Fidelis"?

The battle most famously associated with the Marine Corps motto "Semper Fidelis," meaning "Always Faithful," is the Battle of Belleau Wood. This battle, fought in 1918 during World War I, showcased the tenacity and loyalty of the Marines, solidifying their reputation as elite combat troops.

The Marines' extraordinary performance in Belleau Wood, where they faced fierce resistance and exhibited remarkable bravery and cohesion, directly contributed to the establishment of "Semper Fidelis" as a defining element of their identity. The phrase reflects the unwavering dedication of Marines to each other and their commitment to the mission.

While Iwo Jima, Guadalcanal, and Tripoli are significant battles in Marine Corps history and demonstrate important characteristics of Marine leadership and valor, the association of "Semper Fidelis" specifically resonates most strongly with the events and legacy of the Battle of Belleau Wood.