He admitted to standing naked at his door on two occasions
In the quiet Cambridgeshire town of Littleport, five young women reported being subjected to indecent exposure by an American airman living among them — yet the justice they sought was quietly redirected across an ocean. Under a longstanding bilateral arrangement, US military authorities claimed jurisdiction over Staff Sergeant Hannes Marschalek, removing him from British courts and placing him before a military tribunal that ultimately produced a conviction now overturned on a technicality. The case joins a growing pattern that forces a reckoning with a foundational question: when harm is done on British soil, in British communities, to British people, whose law speaks for the wounded?
- Five young women, one just sixteen, were repeatedly subjected to a neighbour's deliberate exposure over two months — an intimate violation of safety in their own streets.
- Three weeks into a legitimate British police investigation, the US military submitted a formal request to take over, and Cambridgeshire police handed the case across, leaving victims with no say in which system would answer for what was done to them.
- A US court martial in 2023 produced a plea bargain stripped of its most serious allegation, resulting in just two months in a military facility — far short of the two-year maximum an English court could have imposed.
- In April 2026, even that diminished outcome was erased when a military appeals court overturned the conviction on a procedural technicality, leaving Marschalek — now back in the United States — with no standing conviction for what five women say he did.
- The case now sits alongside that of Captain Jacob Wulfson, accused of strangling a British woman, as evidence of a systemic pattern in which off-duty American personnel living in British communities are shielded from British justice by a bilateral arrangement critics say is being stretched beyond its intent.
In the autumn of 2022, five young women in Littleport, Cambridgeshire, reported that a man in their neighbourhood had repeatedly exposed himself to them as they passed his home. The man was Hannes Marschalek, a 37-year-old US Air Force staff sergeant stationed at RAF Lakenheath, living with his wife and daughter a short drive from the base. The women, aged between 16 and 24, described incidents over two months in which he stood naked at his doorway or window, sometimes holding a phone. One said she no longer felt safe in her own town.
Cambridgeshire police arrested Marschalek in October 2022 and began a formal investigation. Three weeks later, the US military submitted an official request to take the case over. The police agreed, stating that victims had been consulted and had not objected. What followed illustrated the peculiar reach of a bilateral arrangement between the two nations: rather than face an English criminal court — where he could have received up to two years in prison — Marschalek was brought before a US military court martial in 2023.
There, prosecutors and defence negotiated a plea bargain. The most serious allegation was removed. Marschalek admitted to standing naked at his door on two occasions, claiming he had simply been cooling down after exercise with no air conditioning. A military judge sentenced him to two months in a correctional facility at Lakenheath and dismissed him from the air force.
The case did not end there. In April 2026, a US military appeals court overturned the conviction on technical grounds, ruling prosecutors had charged him under the wrong offence. Marschalek has since returned to the United States, remaining on the sex offender registry while military prosecutors seek to challenge the ruling.
The episode mirrors the case of Captain Jacob Wulfson, a US pilot also based at Lakenheath, tried by military tribunal rather than British courts after being accused of strangling a British woman in Cambridge. Together, the cases have drawn concern at the highest levels of UK government, with the prime minister's office calling the situation deeply distressing and the deputy prime minister demanding a full account from Washington. As Marschalek's conviction unravels, the question of whether this arrangement adequately protects British victims — and British justice — grows harder to set aside.
In the autumn of 2022, five young women in Littleport, a quiet town in Cambridgeshire, reported that a man living near their neighborhood had exposed himself to them as they passed his home. The man was Hannes Marschalek, a 37-year-old staff sergeant stationed at RAF Lakenheath, the largest US military base in Britain. The women, ranging in age from 16 to 24, described incidents occurring over two months in which Marschalek stood at his doorway or window naked, sometimes holding a phone, sometimes with his hand raised to the door frame. One woman said afterward that she no longer felt safe in her own town.
Cambridgeshire police took the complaints seriously. On October 9, 2022, officers arrested Marschalek at his home in Littleport, where he lived with his wife and daughter, a 25-minute drive from the airbase. They took statements from the victims and began a formal investigation. Three weeks into that investigation, however, something shifted. The US military submitted an official request asking British police to hand the case over to them. On October 31, 2022, Cambridgeshire police agreed. The force said all victims had been consulted about the decision and that none had objected at the time.
What happened next illustrated a peculiar arrangement between the two nations. Rather than face trial in an English criminal court—where conviction on indecent exposure charges could have meant up to two years in prison—Marschalek was brought before a US military court martial in 2023. There, he and military prosecutors negotiated a plea bargain. He admitted to standing naked at his door on two occasions between August and October 2022. The original charge had included an allegation of masturbation, but that was removed from the final version. Marschalek's defense was that he had simply removed his clothes after exercising and opened the door to create airflow because his house had no air conditioning. He claimed he had been there for no more than 20 seconds. A military judge sentenced him to two months in a correctional facility at Lakenheath and dismissed him from the air force.
But the case did not end there. In April 2026, a US military appeals court overturned his conviction on technical grounds, ruling that prosecutors had charged him under the wrong offense. Military prosecutors are now seeking to challenge that ruling. Marschalek has since returned to the United States, where he remains on the sex offender registry.
The transfer of Marschalek's case to US military jurisdiction was not an isolated incident. It echoes the case of Captain Jacob Wulfson, a US fighter pilot also based at RAF Lakenheath, who was tried in a US military tribunal rather than a British court after being accused of strangling a British woman he met through a dating app in Cambridge in 2023. The victim, Sarah Steele, an academic, has described her experience as degrading. Both cases raise a fundamental question about justice: when crimes occur on British soil, committed by off-duty American military personnel living in British communities, which nation's courts should have authority?
Under an agreement between the two countries, UK police are required to give sympathetic consideration to requests from the US military to take over investigations into crimes committed away from US bases by off-duty American personnel. Police have the power to refuse such requests and have done so repeatedly. Yet in cases involving sexual crimes, some forces appear to be ceding control as the US military seeks to expand its jurisdiction. A US Air Force spokesperson said the military had negotiated jurisdiction over Marschalek's case using all available facts at the time. Cambridgeshire police said the decision to transfer the investigation had been carefully considered.
The Wulfson case prompted concern at the highest levels of the UK government. A spokesperson for the prime minister called it deeply distressing that Wulfson had avoided trial under English law. David Lammy, the deputy prime minister, told parliament he wanted a full account from the US government of what had happened. Marschalek's case, now that his conviction has been overturned, will likely intensify those questions about whether the current arrangement adequately protects British victims and upholds British justice.
Notable Quotes
I definitely just flashed a couple ladies walking from the train. LOL.— Hannes Marschalek, in text messages to friends in July 2022
One woman later said she no longer felt safe in her home town.— Court documents describing victim impact
The Hearth Conversation Another angle on the story
Why did British police hand this case over to the US military in the first place? They had already arrested him and started investigating.
There's an agreement between the two countries that requires UK police to give sympathetic consideration to such requests. The US military argued they had jurisdiction because Marschalek was their employee. Police said all victims were consulted, though it's unclear how much weight their preferences actually carried.
So the victims had a say in whether their case went to a British court or a military tribunal?
Theoretically, yes. Police said they consulted the victims and no one complained at the time. But there's a power imbalance built into that question. How do you tell a young woman that her assault case might disappear into a foreign military system, and then ask if she's comfortable with that?
What's the practical difference between a British court and a US military court martial in a case like this?
In an English court, he faced up to two years in prison. In the court martial, he got two months and a discharge. The military also removed the masturbation allegation from the final charge. The whole process happened faster and with less public scrutiny.
And now his conviction has been overturned entirely.
On a technicality. Prosecutors charged him under the wrong offense, according to the appeals court. So a man who admitted to exposing himself to five young women, including a 16-year-old, may face no consequences at all. He's already back in the US.
What does this tell us about how these agreements actually work in practice?
That they're asymmetrical. The US military can negotiate its way out of British jurisdiction in sexual assault cases. British victims lose the certainty of their own legal system. And there's no real accountability when things go wrong.