What nickname refers to the spirit and toughness of Marines?

The nickname that refers to the spirit and toughness of Marines is "Devil Dogs." This term has historical significance and is believed to have originated during World War I when German soldiers reportedly referred to Marines as "Teufel Hunden," which translates to "Devil Dogs" in English. This nickname was adopted by the Marines themselves to embody their fierce fighting spirit and resilience in battle. It reflects the tenacity and determination that are hallmarks of Marine Corps identity, resonating with the pride and camaraderie of the Marines who wear the title.

While the other nicknames have their own meanings and contexts, "Devil Dogs" specifically emphasizes the almost mythical toughness and combat prowess associated with Marines, especially in the context of historical battles where they showcased their relentless fighting spirit. For instance, "Jarheads" is a nickname primarily referring to the Marine Corps' high-and-tight haircut. "Leathernecks" is derived from the leather collars worn by Marines in the 1800s to protect them in hand-to-hand combat, and "Grunts" is a colloquial term for infantry Marines. Each of these terms reflects aspects of Marine culture, but "Devil Dogs" uniquely captures the essence of their fighting spirit and tenacity.