The novel is set against the backdrop of the Hundred Years' War between England and France, specifically focusing on the battles of Crécy and Poitiers. The story follows the adventures of a young protagonist, typically a boy or a young man, who finds himself caught up in the tumultuous events of the time.As with many of Henty's works, "St. George for England" blends historical accuracy with fictional narrative to create an engaging and educational story. Through the eyes of the protagonist, readers are transported to medieval Europe, where they witness epic battles, daring feats of valor, and encounters with historical figures.