What Outfit Buddy? is set against the backdrop of World War I and it explores the experiences of American soldiers. The story focuses on the camaraderie and challenges faced by the soldiers highlighting their interactions and the bonds they form during wartime. The novel's title suggests a focus on the soldiers' uniforms or outfits which could be a metaphor for their roles and identities within the military. The story likely delves into the personal and emotional experiences of the characters offering a depiction of their bravery struggles and the impact of the war on their lives.