Final answer:
The passage from "The War Prayer" has a solemn and imploring mood, with a serious plea for divine aid for soldiers in battle.
Step-by-step explanation:
The mood of the passage from "The War Prayer" can best be described as solemn and imploring. The words used in the passage convey a deep sense of earnestness and intensity. The request made in the prayer is for divine support and protection over young soldiers in battle, reflecting a mood of deep seriousness and a strong desire for divine intervention and the well-being of the combatants.