Final answer:
Marines overcome their fear of injury and death to fight due to their rigorous training, strong sense of brotherhood, and belief in the cause.
Step-by-step explanation:
The reasons why Marines overcome their natural fear of injury and death to fight can be attributed to several factors:
- Training: Marines undergo rigorous training that prepares them physically and mentally for the challenges of combat. This training instills discipline and develops a strong sense of duty, which helps them overcome their fear.
- Brotherhood: The bond between Marines is incredibly strong. They rely on each other for support and protection, creating a sense of camaraderie that motivates them to fight for their fellow Marines and the greater mission.
- Belief in the cause: Marines are driven by a deep commitment to their country and the defense of freedom. They believe in the values and principles they are fighting for, which gives them the strength to overcome their fear.