"Under the Star-Spangled Banner" is another adventure novel written by F. S. Brereton. In this book, Brereton likely explores themes of patriotism and adventure in an American context, given the title's reference to the United States' national anthem, "The Star-Spangled Banner." While I don't have specific details about the plot of this particular novel, Brereton's adventure novels often feature young protagonists who embark on daring journeys, face challenges, and display qualities such as courage, resourcefulness, and a strong sense of duty. The story may involve various settings, including remote or exotic locations, and could encompass elements of action, suspense, and character development. "Under the Star-Spangled Banner" is likely to appeal to readers who enjoy thrilling adventures and stories with a strong patriotic or nationalistic theme.