Aimed at young readers, the book explains why Britain entered the conflict and then retells key campaigns — Belgium, Mons, the Great Retreat, Cambrai, Landrécies, St. Quentin, the Marne, the Aisne and naval actions — through concise narratives of battles and examples of individual courage. It foregrounds duty and the happy warrior ideal, links modern deeds to earlier battles and poetry, and uses eyewitness letters and correspondent reports to present gallant actions while acknowledging hardship, outlining allies’ roles and offering a broad view of the war’s human and moral dimensions.