The U.S. Army Master Resilience Trainer (MRT) course, which provides face-to-face resilience training, is one of the foundational pillars of the Comprehensive Soldier Fitness program. The 10-day MRT course is the foundation for training resilience skills to sergeants and for teaching sergeants how to teach these skills to their soldiers. The curriculum is based on materials developed by the University of Pennsylvania, the Penn Resilience Program (PRP), and other empirically validated work in the field of positive psychology. This "train the trainer model" is the main vehicle for the dissemination of MRT concepts to the entire force. (Contains 1 figure.)