What reason does a narrator offer for the soldiers willingness to endure?

The narrator suggests that the soldiers' willingness to endure stems from a deep sense of camaraderie and shared purpose among them. They are motivated by the bonds they have formed with one another, which provide emotional strength and resilience in the face of adversity. Additionally, the soldiers often draw on a sense of duty and commitment to their country, which fuels their determination to persevere despite the hardships they encounter.