- Lieutenant Frederic Henry: An American serving in the Italian Army as an officer directing ambulance drivers.
- Miss Catherine Barkley: A nurse and love interest of Henry.
- Lieutenant Rinaldi: An eccentric Army surgeon serving near the front lines who takes a brotherly interest in Henry.
- The priest: An army chaplain, often has discussions about God and war with Henry.
- Helen Ferguson: A friend and fellow nurse of Miss Catherine.
- Miss Van Campen: The officious superintendent of nurses at the American hospital in Milan. She and Henry immediately dislike each other.
- Miss Gage: An unconventional nurse at the American hospital in Milan who befriends Henry.
- Major Valentini: A brisk, cheerful and competent surgeon who operates on Henry's wounded knee in Milan.
- Gino: A very likeable Italian soldier whose vocal patriotism nonetheless bothers Henry.
- Bonello: An ambulance driver under Henry's command who deserts to find safety by being captured by the enemy.
- Piani: An ambulance driver who stays with Henry out of personal loyalty.
- Passini: An ambulance driver killed in the mortar attack that wounds Henry.
- Aymo: An ambulance driver killed by straggling guards of the retreat's main line.
- Emilio: A bartender in the town of Stresa who helps them flee to Switzerland.
- Count Greffi: A ninety-four-year-old nobleman, having some past acquaintance with Henry.
- Ralph Simmons and Edgar Saunders: Two journeyman opera singers studying and performing in Italy under Italian stage names.
This content is from Wikipedia. GradeSaver is providing this content as a courtesy until we can offer a professionally written study guide by one of our staff editors. We do not consider this content professional or citable. Please use your discretion when relying on it.