The CTC field manual describes the essential design, implementation, and evaluation protocols for implementing the CTC approach to addressing severe acute malnutrition in children in emergencies and beyond. The CTC supplement is a collection of articles that provides a wide range of evidence-based perspectives from people who have been involved in CTC programs. The articles, which appeared as a special supplement in the Emergency Nutrition Network’s Field Exchange, present the impact and effectiveness of the CTC model in different contexts through lessons learned from case studies in Ethiopia, Malawi, and northern and southern Sudan.