Allied Command Transformation (ACT) (French: Le Commandement allié Transformation) is a NATO military command, which was formed in 2003 after North Atlantic Treaty Organisation restructuring. It is intended to lead military transformation of alliance forces and capabilities, using new concepts such as the NATO Response Force and new doctrines in order to improve the alliance's military effectiveness. Since France rejoined the NATO Command Structure in mid-2009, a significant change took place where the SACT is now is a French officer. The first French Officer to serve as SACT was French Air Force General, Stephane Abrial, (2009-2012)