Rebuilding public health and health care delivery systems has been an important component of nation-building efforts conducted after major conflicts. However, few studies have attempted to examine a comprehensive set of cases, compare the quantitative and qualitative results, and outline best practices. The study assesses seven cases of nation-building operations following major Germany and Japan immediately after World War II; Somalia, Haiti, and Kosovo in the 1990s; and Afghanistan and Iraq since 2001. It concludes that two factors increase the likelihood of successful health planning and coordination, and infrastructure and resources. In addition, the study argues that health can have an independent impact on broader political, economic, and security objectives during nation-building operations.