What phrase best describes the role of every Marine?

The phrase that best describes the role of every Marine is "Rifleman." This designation is foundational to the Marine Corps ethos and reflects the idea that every Marine, regardless of their specific job or specialty, is first and foremost a trained combatant. The training received by all Marines emphasizes proficiency in the use of a rifle and familiarization with combat tactics, ensuring they are prepared to fight alongside their fellow Marines in any situation. This foundational identity underscores the Corps' commitment to readiness and cohesion, where every Marine contributes to the mission's success through their combat skills, regardless of their specialty or unit designation.

While roles such as Support Officer, Combat Engineer, and Logistics Specialist are vital to the effectiveness of the Marine Corps, they fall under specific functional categories that support the overall mission. However, the concept of every Marine being a Rifleman reinforces the principle of all Marines being capable of engaging in combat and fulfills the Corps' operational readiness.