Frederic Henry is the protagonist of Ernest Hemingway's novel, "A Farewell to Arms." He is an American ambulance driver in the Italian army during World War I. The character is known for his introspective nature and struggles with the harsh realities of war, love, and loss. Throughout the story, Frederic develops a romantic relationship with Catherine Barkley, a British nurse. Their love serves as a refuge from the chaos of the battlefield, highlighting themes of hope and despair. Frederic's journey reflects the impact of war on personal relationships and the search for meaning in difficult times.