Final answer:
The poem conveys themes of the transient nature of life and the stark realities of war, through the depiction of warriors departing for battle and their willingness to sacrifice for their community.
Step-by-step explanation:
Two themes evident in the provided poem are the transient nature of life and the somber reality of war. The poem reflects on the inevitability of departure and the notion that life is a journey filled with uncertainty and separation. It also delves into the sacrifices made by warriors, who must focus solely on the conflict ahead and disregard their surroundings, highlighting the intense focus and dedication required in times of war.
The theme of departure is elucidated as warriors leave behind their loved ones to travel on a 'long journey,' implying both a physical distance and an existential departure from life as they know it. The commitment to protect the tribe emphasizes the warriors' readiness to sacrifice their personal desires for the broader community, underlining the second theme of the harsh realities and emotional toll of war.