London Daily

Focus on the big picture.
Sunday, Sep 20, 2026

Marines fooled a DARPA robot by hiding in a cardboard box while giggling and pretending to be trees

Marines fooled a DARPA robot by hiding in a cardboard box while giggling and pretending to be trees

Former Pentagon policy analyst Paul Scharre wrote in his upcoming book that the Marines were training to defeat the AI system powering the robot.
The state-of-the-art robots used by the Pentagon had an easily manipulated weakness, according to an upcoming book by a former policy analyst: Though they're trained to identify human targets, the bots are easily fooled with the most lackluster of disguises.

In his upcoming book, "Four Battlegrounds: Power in the Age of Artificial Intelligence," former Pentagon policy analyst and Army veteran Paul Scharre writes that the Defense Advanced Research Projects Agency (DARPA) team trained its robots with a team of Marines for six days to improve its artificial intelligence systems.

Shashank Josi, defense editor at The Economist, posted several excerpts from Scharre's book on Twitter. In the passages, Scharre details how, at the end of their training course, the Marines devised a game to test the DARPA robot's intelligence.

Eight Marines placed the robot in the center of a traffic circle and found creative ways to approach it, aiming to get close enough to touch the robot without being detected.

Two of the Marines did somersaults for 300 meters. Two more hid under a cardboard box, giggling the entire time. Another took branches from a fir tree and walked along, grinning from ear to ear while pretending to be a tree, according to sources from Scharre's book.

Not one of the eight was detected.

"The AI had been trained to detect humans walking," Scharre wrote. "Not humans somersaulting, hiding in a cardboard box, or disguised as a tree. So these simple tricks, which a human would have easily seen through, were sufficient to break the algorithm."

Though it is unclear when the exercises in Scharre's book took place, or what improvements have been made to the systems since, DARPA robots' antics have long faced obstacles to their performance, including poor balance and concerns over their potential to cause accidental killings due to AI behaving in unpredictable ways.

"The particular experiment this appears to reference, part of our Squad X Core Technologies program, was an early prototype test to improve squads' situational awareness by detecting approaching people," a DARPA spokesperson said in an email to Insider. "In the next experiment, our team demonstrated a detection ability that exceeded expectations in a far more challenging environment. This is the nature of high risk and actively managed programs. We have not read the book but, in general, we are constantly testing and experimenting with new technologies."

The spokesperson added: "There is certainly still much work to be done to advance AI capabilities and we've seen tremendous promise in its national security applications."

Some of the technologies DARPA has recently backed include disease detecting sensors to be injected under the skin, a nuclear-powered rocket that could take humans to Mars, and AI-powered unmanned drone swarms.

Scharre did not immediately respond to Insider's requests for comment. "Four Battlegrounds: Power in the Age of Artificial Intelligence" will be released on February 28.
Newsletter

Related Articles

0:00
0:00
Close
British Museum Faces Questions Over Peter Thiel’s Private Bayeux Tapestry Viewing
Earl Spencer Memoir Excerpts Renew Public Debate Over Diana’s Death
Liberal Democrats Gather in Brighton for Autumn Conference
Mothercare Shares Plunge as Middle East Store Closures Threaten Long-Term Solvency
Kent Police Treat Folkestone Hotel Fire as Suspicious
Caribbean Governments Advance Reparations Campaign Seeking Engagement With Britain
Scottish Labour Leader Backs Rosebank and Jackdaw North Sea Projects
FCA Urges Young Adults to Trace £1.5 Billion in Unclaimed Child Trust Funds
UK Competition Regulator Opens Inquiry Into McCormick-Unilever Foods Deal
Public Inquiry Into Tees, Esk and Wear Valleys Mental Health Failings Set to Begin
Nigel Farage Looks to US Immigration Enforcement Model for UK Border Policy
Chiltern Railways Moves Into Public Ownership
Security Review Raises Concerns Over Sensitive UK Police Data Stored on Microsoft Cloud
Burnham Government Warns of Difficult Autumn Budget as Fiscal Headroom Narrows
Bank of England Holds Rates at 3.75% as Inflation Rises to 3.1%
Ed Sheeran Tour Faces Backlash After Macklemore Is Removed Over Pro-Palestinian Remarks
Vandalism of Traffic Cameras Intensifies Across Parts of England
Nearly 300 Evacuated as Fire Hits Grand Burstin Hotel in Folkestone
King Charles Warns AI Executives About Risks From Uncontrolled Technology
Church of England Apologises for Role in Historical Forced Adoption Practices
UK Debate Over Online Speech Intensifies After Arrest Figures Draw Scrutiny
Oxfordshire Village Holds Symbolic Independence Vote Over Asylum Accommodation Plan
Nigel Farage and Richard Tice Sue National Crime Agency Over Alleged Banking Data Leaks
Apple Introduces Stricter Age Checks for UK Accounts
BBC Cash Reserves Fall 66% to £125 Million as Broadcaster Restructures
McLaren Announces £500 Million UK Investment and Plans 1,000 Jobs
Green Party Wins Historic Gorton and Denton By-Election as Labour Falls to Third
Burnham Government Prepares October Budget Under Growing Fiscal Pressure
UK Energy Suppliers Pull Fixed-Price Deals as Wholesale Markets Turn More Volatile
Bank of England Holds Rates at 3.75% as Middle East Energy Shock Raises Inflation Risks
Addison Lee Founder Loses £20 Million UK Tax Tribunal Case
BrewDog Creditors Face Losses on About £190 Million of Debt
Harrods Seeks to Recover Abuse Compensation Costs From Mohamed Al Fayed’s Estate
Ed Davey Targets Reform UK as Liberal Democrat Conference Opens
Great Britain Retail Sales Rise 0.5% in August
NHS England Approves Life-Extending Treatment for Incurable Breast Cancer
Proposals to Limit NHS ADHD Diagnoses Draw Criticism From Patient Groups
Resolution Foundation Warns of Housing Cost Crunch for Low-Income UK Families
BBC Cash Reserves Fall to Decade Low as Annual Deficit Reaches £121 Million
Millisecond Software Error Triggered Major UK Air Traffic Control Disruption
Twenty Women Underwent Unnecessary Mastectomies During NHS Cancer Care
Sensitive UK Police Data Found Vulnerable to Access by Foreign Actors
British Steel Faces Renewed Pressure for a Long-Term Financial Plan
MPs Urge Government to End Thames Water Restructuring Talks With U.S. Hedge Funds
Andy Burnham Warns of Difficult UK Budget Choices as Inflation Returns to 3.1%
England Tightens School Food Standards With Restrictions on Deep-Fried and High-Sugar Foods
Oxfordshire Village Votes Symbolically to Leave UK Over Proposed Asylum Centre
Michael Marra Elected Leader of Scottish Labour
BBC Cash Reserves Fall Sharply as Financial Pressures Mount
George Osborne Calls for UK to Rejoin EU Customs Union
×