Allied Command Transformation (ACT) promotes and leads many initiatives designed to transform NATO's military structure, its forces, capabilities and doctrine. ACT's main responsibilities include education, training and exercises, as well as conducting experiments to assess new concepts, and promote interoperability throughout the Alliance.
ACT is one of two Strategic Commands (SCs) in NATO, the other being Allied Command Operations (ACO). The primary function of the NATO Command Structure (NCS) is first and foremost to provide the command and control needed to contribute to the deterrence of aggression and the preservation of peace, security and the territorial integrity of the Alliance. Ultimately, the NCS plays an essential role in preserving cohesion and solidarity within the Alliance. It helps maintain and strengthen the vital transatlantic link between Europe and North America and promotes the principle of equitable sharing of roles, risks and responsibilities among the Allies, as well as the sharing of collective defence benefits.
Headquarters Supreme Allied Commander Transformation (HQ SACT), located in Norfolk, Virginia (USA) is the only permanent NATO Headquarters outside of Europe and sole NATO Headquarters in North America. It directs ACT's various subordinate commands: Joint Warfare Centre (JWC) in Norway, Joint Forces Training Centre (JFTC) in Poland, Joint Analysis & Lessons Learned Centre (JALLC) in Portugal. It also has strong links with the Pentagon and other US military entities, national headquarters and NATO-accredited Centres of Excellence, Academia and 'Think Tanks' as well as the NATO Force Structure in general.
The Supreme Allied Commander Transformation (SACT) is a four-star level flag or general officer (currently a French general). He is responsible to the Military Committee (MC) for the transformation and development of the Alliance to ensure that it is capable of meeting the challenges of today and of tomorrow. The MC is the senior military authority in NATO and it is under the overall political authority of the North Atlantic Council (NAC).