It turns out that national sovereignty is mostly just a meme when you have 12,000 foreign troops parked in your backyard. Thanks to an obscure 1951 agreement, the United States military has been running its own shadow justice system right on British soil. When US service members commit crimes in the UK—even when they are completely off-duty and off-base—they get to completely bypass the British legal system. Instead of facing a standard civilian court, they get funneled into a private military tribunal called a court martial, leaving locals to wonder why British law enforcement has essentially abdicated its job.

Right now, there are more than 12,000 US military personnel hanging out at 15 bases across the UK, with all of them located in England except for Lossiemouth up in Scotland. Naturally, with that many troops, things go sideways. The list of convictions includes everything from speeding, drink-driving, and cruising around in uninsured cars, to much heavier offenses like violent attacks, indecent exposure, sexual assault, and paedophilia. Many of these crimes involved actual British citizens as victims and went down entirely outside of the US bases. But instead of getting processed like any regular citizen, these service members get whisked away behind heavily guarded perimeter fences to face 'military justice.'

The whole setup of a court martial is designed to maintain 'order and discipline'—an ancient concept going back to Roman times. Basically, a US military commander gets to call the shots and convene a hearing. The judges, the prosecutors, and the defense lawyers are all legally trained, but they all collect a paycheck from the exact same employer: the US military. The jury isn't made up of local peers either; it is composed entirely of military personnel. Try explaining to a local victim why their case is being decided by the defendant's own coworkers behind a giant barbed-wire fence where the public isn't even allowed to walk in and watch.

The rules of the game are laid out in the Uniform Code of Military Justice (UCMJ). Sure, it covers standard military stuff like deserting, disobeying orders, and war crimes, but it also claims jurisdiction over civilian crimes like sexual violence. In a bizarre twist of military morality, the UCMJ also gets incredibly specific about personal lifestyle choices to protect 'good order.' If a soldier commits infidelity against their partner, they can pull up to a year in a military prison. If they get caught gambling with the lower ranks, that's a quick three-month stay in the brig. Apparently, cheating on your spouse is a major federal case, but violating British sovereignty is just another Tuesday.