Knightfall Protocol

The Knightfall Protocol was the last of Batman's backup plans, to be deployed only when Batman's secret identity was compromised in order to protect those closest to him. It is unknown when Batman devised this final contingency plan. The protocol involved faking Batman and Alfred's deaths through the destruction of Wayne Manor via explosives planted to destroy the mansion and the Batcave while keeping the explosion within the gates of the manor. The Knightfall Protocol was finally deployed during the events of Arkham Knight after Scarecrow revealed on telelvision that Bruce Wayne is Batman. After neutralizing the villain with his own fear toxin and imprisoning all of his worst enemies for good, Batman unmasked in front of the Bat-signal and took the Batplane and Batmobile to Wayne Manor before triggering the explosives in front of hundreds of news reporters, bringing the legend of the Batman to an end.

In the real world, the Knightfall Protocol was likely named after the Knightfall story arc of the Batman comics, in which the villain Bane broke Batman's back, forcing him to call upon Jean-Paul Valley (then known as Azrael) to take upon the mantle of the Bat while he healed, only for Valley to go insane forcing Bruce to reclaim his rightful title.