Order 66: In the event of Jedi officers acting against the interests of the Republic, and after receiving specific orders verified as coming directly from the Supreme Commander (Chancellor), GAR commanders will remove those officers by lethal force, and command of the GAR will revert to the Supreme Commander (Chancellor) until a new command structure is established.
Order 66 details
Order 66 is an order in the Galactic Republic's army for Clone Troopers. It means that the Jedi are traitors and gives orders for Clones to kill their Jedi commanders. After Order 66, the Galactic Empire was formed and the order remained in act during the Galactic Empire era. Within the order spawned a subdivisory called Operation: Knightfall led by the newly appointed Commander Lord Vader commanding the 501st legion with the task to kill all the Jedi traitors inside the Jedi temple.