The JSOU Press presents this collection of writings from five current and former practitioners in the field of irregular warfare. The writers delve into the concept of surrogate warfare, defined as a substitute force acting on behalf of the interests of another as well as its own interests. For many special operators, the concept of unconventional warfare provides the paradigm for working "through, with, or by" other forces to achieve strategic objectives. Here the authors expand the concept by exploring "surrogate warfare." This volume provides insights into this aspect of modern warfare and should be considered by senior military leaders and policymakers. Drawing upon their recent experiences in the field, the authors provide practical lessons for their colleagues' consideration.