The plot likely revolves around a group of adventurous young men, members of the Khaki Troop, who embark on a challenging hike or expedition. The novel probably emphasizes themes such as teamwork, courage, and perseverance as the characters navigate obstacles, both natural and interpersonal, during their journey.Captain Alan Douglas, known for his storytelling aimed at boys and young men, likely incorporates elements of patriotism, camaraderie, and personal growth into the narrative of "Great Hike." The novel may also highlight the spirit of adventure and the thrill of exploration, providing readers with an exciting and inspiring tale set against the backdrop of wartime challenges.