"Under the Flag of France: A Tale of Bertrand du Guesclin" by David Ker is a historical novel written in the early 20th century. The book centers around Bertrand du Guesclin, a young boy from Brittany in the 14th century, who faces ridicule due to his physical appearance but is destined for greatness. The narrative explores themes of heroism, destiny, and the struggles of the underdog as it unfolds during a tumultuous period marked by conflict between France and England. The opening of the tale introduces readers to a fourteen-year-old Bertrand, who is grappling with feelings of despair over his perceived ugliness and his longing for acceptance. Set against a serene backdrop of the Breton countryside, Bertrand's emotional turmoil leads to an inner confrontation as he expresses a wish for death due to his family's disdain. However, his fortunes begin to shift when he encounters a beautiful song that resonates deeply with him, followed by a fateful encounter where he demonstrates great valor by saving a simpleton from a wolf attack. This moment establishes Bertrand's character and foreshadows the greater legacy that awaits him as a defender of the weak. Additionally, the presence of Brother Michael, a holy monk who assures Bertrand of his destined greatness, paints a vivid picture of Bertrand's journey from a tormented youth to a future champion of France. (This is an automatically generated summary.)