Jacob's 12-year-old great-grandson, who is fascinated by World War II and video games depicting the era, undergoes a transformation in understanding the true nature of war.

Trevor's father and Jacob's grandson, a history teacher with a critical view of war glorification, who supports Trevor and Jacob's trip to France as a learning experience.

One of the few remaining members of the Lafleur family, she initially holds a grudge against Jacob but plays a role in reconciling past grievances.

Juliette's 17-year-old cousin, whose initial hostility toward Jacob's presence at their town's ceremony evolves over time.

A French farmer and member of the French Resistance during World War II, who interacts with Jacob during a critical point in the war.

A robust and friendly Texan recruit who transfers to Jacob's unit and remains a steadfast companion through the war.

One of Jacob’s friends from boot camp, who faces danger early during the war's significant battles.

Another close companion of Jacob from training, whose story unfolds through the volatile circumstances of war.

Daniel's ex-wife and Trevor’s mother, who is skeptical about Trevor's trip to France but ultimately allows it for his growth.

Trevor's 6-year-old twin sisters, influenced by his interest in wartime games but later presented with a more grounded perspective by Trevor.