The Regime is an organization founded by Superman in a possible future, comprised of elite soldiers and dedicated to maintaining his totalitarian regime on Earth.
At some point in a possible future, Lois Lane was be killed with Batman having been unable to prevent it. Superman, unhinged with grief, was left susceptible to Darkseid's Anti-Life Equation and became a malevolent tyrant ruling the planet. He presumably recruited the regime soldiers to aid him in his totalitarian regime of Earth, mercilessly killing anybody who opposed him. Batman promptly founded the Insurgency in order to combat this new threat, thus beginning the long Injustice War.
Injustice WarBatman, in desert clothing, exited a bunker and watched his Insurgency allies approach. He met with them and asked for the Kryptonite rock, the only remaining hope of defeating Superman. However, they open the box to reveal only green light bulbs. They apologized to him and held Batman at gunpoint. He followed through with their commands as the undercover regime soldiers revealed themselves to Batman and the insurgents. They executed them as Batman watched helplessly. Angered, he began a killing spree and gunned down multiple stormtroopers, while helping some of his surviving insurgents escape the area. Although he managed to take down most of the regime soldiers while parademons invaded the area and abducted many of his allies, Batman was eventually overwhelmed by the remaining soldiers there who could barely restrain him. He snapped one of their necks, but then was brutally (but barely) beaten by the other stormtroopers. Seeing the damage that Batman was inflicting on the stormtroopers and their inability to restrain him, a parademon knocked Batman unconscious.
Batman regained consciousness chained up in a bunker with his few remaining insurgent allies, eyeing them helplessly. Superman himself then landed in the bunker, and his regime soldiers reverently knelt before their leader. He approached Batman, swiftly murdering the other insurgency members with his heat vision. Superman then unmasked the visibly horrified vigilante. He expressed his anger at Bruce for letting "her" die, as she was "his world." Superman gave Batman one final sinister sneer, and ruthlessly killed him by tearing Batman's heart from his chest, thereby ending the Injustice War.
- Superman - Founder and Leader