What is the biggest test of faith for the protagonist in the book and how did the protagonist get through this?

When Henry Mucci's unit is selected to execute the rescue mission to Cabanatuan Camp. Mucci leads the rescue mission and, with Robert Prince, plans the details of the raid. During the assault, Mucci remains in the rear area directing the overall rescue operation. He demonstrates courage, expertise, and innovation throughout the mission and is willing to work with others to achieve common goals. For example, Mucci works with and trusts the various insurgent leaders as well as his own subordinate officers. Mucci demonstrates the proper blend of aggressiveness and caution and emerges as a nearly superhuman leader of men during the withdrawal phase of the operation. Several survivors recall Mucci's unflagging enthusiasm and devotion to success during the withdrawal phase. The text features two photographs of Mucci.