Control of the air is the foundation for all conventional military operations against an adversary with an air defence capability. In future warfare, will it be possible for unmanned combat air systems, the next stage in unmanned aircraft system evolution, to undertake the tasks and accept most of the risks that, until now have been the lot of military aviators? Against potential adversaries with an anti-access/area denial doctrine, current and planned weapon systems will be tested by the necessity to operate at extended ranges and with adequate persistence. This book examines the requirements and advantages of extended range and endurance, and the potential for swifter and more efficient actions that counter-air unmanned combat air systems bring to warfare.