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Locations of NATO's two strategic commands — Allied Command Transformation (ACT) with its subordinate centres (blue marks) and Allied Command Operations (ACO), headquartered at Supreme Headquarters Allied Powers Europe (SHAPE) and including its subordinate and joint force commands (red marks).
Allied Command Operations (ACO) is one of the two strategic commands of the North Atlantic Treaty Organization (NATO), the other being Allied Command Transformation (ACT). The headquarters and commander of ACO is Supreme Headquarters Allied Powers Europe (SHAPE) and Supreme Allied Commander Europe (SACEUR), respectively.