Zamperini and two fellow crewmen survived 47 days adrift on a life raft, battling sharks, starvation, and strafing from enemy aircraft.
The title reflects Zamperini's refusal to let his spirit be crushed, even under extreme physical and psychological torture. Unbroken
A book titled Unbroken: A Journey from Silence to Strength which explores personal growth and overcoming silence. Zamperini and two fellow crewmen survived 47 days