The present study examines one long-standing peace and global education initiative for pre-service teacher candidates. It probes the meanings of peace education and of global education embedded in the program, as well as the program's effects on the pre-service candidates' understandings of peace education. The article discusses two main challenges faced by the core faculty in this peace education program. In particular, teacher candidates' understandings of peace education often seemed limited, especially in relation to their competence in developing curricula for other strands of global education. Second, teacher candidates often had difficulty acquiring the relevant knowledge base and teaching materials necessary for facilitating the complex pedagogies associated with peace education.