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Once in the military, Joey's adaptability shines through as he navigates training alongside other horses, including the more seasoned Talkthorn. Joey quickly realizes the harsh realities of war when Captain Nichols is killed during a battle against the Germans. As the chaos unfolds, Joey and his fellow horses are captured by the enemy.
Young German soldier Gunther develops a fondness for the horses and persuades his superiors to use Joey and Talkthorn to help transport the wounded rather than sacrificing them. This humanitarian act offers a glimpse of kindness amidst the backdrop of war's brutality.