Curtis Michael "Mike" Scaparrotti is a retired United States Army four-star general who last served as the commander of United States European Command. He concurrently served as NATO's Supreme Allied Commander Europe. Scaparrotti previously served as the director of the Joint Staff. Prior to his tour with the Joint Staff, Scaparrotti served as commander, International Security Assistance Force Joint Command and deputy commander, U.S. Forces – Afghanistan, the commanding general of I Corps and Joint Base Lewis-McChord, and the commanding general of the 82nd Airborne Division.

The Supreme Allied Commander Europe (SACEUR) is the commander of the North Atlantic Treaty Organization's (NATO) Allied Command Operations (ACO) and head of ACO's headquarters, Supreme Headquarters Allied Powers Europe (SHAPE). The commander is based at SHAPE in Casteau, Belgium. Effectively SACEUR is the second-highest military position within NATO, below only the Chair of the NATO Military Committee in terms of precedence. There is another Supreme Allied Commander in NATO, Supreme Allied Commander Transformation (SACT), titularly equal, but their duties are less important. SACT, in Norfolk, Virginia, has responsibility for capability development, rather than operations.