Cacciato is a young and friendly soldier with a large, round face, often seen smiling and whistling. He is perceived by others as either brave or simple-minded, and he dreams of escaping the war.

Sarkin is a character who exists entirely within Paul’s imagination and becomes his love interest on the road to Paris. She embodies Paul’s desire to prioritize personal dreams over his obligations as a soldier.

Lieutenant Corson is an aging, kind leader, loved by his men for prioritizing their safety over strict military protocol. Once a promising officer, his career has been marred by demotions and personal struggles.

Lieutenant Martin is Corson's counterpart, characterized by his strict adherence to procedures and protocols. His focus on formal protocol has grave consequences for the squad.

Oscar Johnson is the de facto leader among the soldiers, known for orchestrating significant decisions. He presents a tough exterior and is perhaps the only African American member of the squad.

Doc is an unconventional medic who provides comfort and wisdom to the squad through both placebos and advice. He is known for his steadfastness and reliability.

Stink is a brash and impulsive soldier with a crude demeanor, known for his offensive remarks and impulsive actions. Despite this, he cares deeply for his sisters.

Eddie is a music-loving soldier who carries the radio and offers frequent jokes. He is serious about his responsibilities, and though he initially votes to go back, he remains with the squad.