
Russian troops are exploiting Ukraine’s abandoned gas and water pipelines to infiltrate defensive lines, forcing a desperate scramble to fortify critical infrastructure before more ground is lost behind the front.
Story Snapshot
- Russian forces have repeatedly used underground pipelines to bypass Ukrainian defenses, with at least three major incidents since 2024.
- Ukraine is urgently flooding, booby-trapping, and fortifying pipes to block further covert Russian advances.
- The pipeline tactic exposes new vulnerabilities in Ukraine’s infrastructure, raising security and economic concerns.
- Both sides frame the operations as proof of adaptation and resilience, but facts remain hard to independently verify.
Russian Troops Weaponize Ukraine’s Legacy Pipelines for Infiltration
Russian forces have turned Ukraine’s extensive network of dormant gas and water pipelines—once used to transport energy across Europe—into unconventional invasion routes. Since early 2024, at least three operations have seen Russian troops crawl or walk for miles under contested territory, emerging behind Ukrainian lines to establish supply routes and attack positions. The most recent infiltration near Kupiansk in September 2025 highlights how these massive pipes, some over 1.4 meters in diameter, have become a rare and dangerous avenue for covert military maneuvering.
Ukraine’s response has been swift and severe. After Russian special forces advanced through a gas pipeline as far as nine miles in the Kursk region in March 2025, Ukrainian defenders began flooding pipes, destroying access points, and installing barbed wire and explosives at likely exits. Drone units and engineering teams now use surveillance and demolition to monitor these underground routes, aiming to prevent more surprise attacks and protect key towns like Kupiansk and Avdiivka from being outflanked by hidden enemy movements.
Pipeline Warfare: Risks, Adaptation, and Civilian Fallout
The use of pipelines as military tunnels is nearly unprecedented in modern warfare, but Ukraine’s vast, underused energy infrastructure—left idle as Europe cut off Russian gas—offers unique opportunities for such tactics. For Ukrainian troops and local civilians, the threat is immediate: surprise attacks from the rear can destabilize already fragile defenses and put noncombatants at risk in contested towns. The ongoing damage to infrastructure also threatens the country’s hopes for postwar economic recovery, as pipelines critical for future energy transit are flooded or destroyed in the name of security.
Expert analysis from Ukrainian military engineers and OSINT groups emphasizes the need for constant vigilance and rapid adaptation to these evolving threats. Russian war bloggers, meanwhile, tout the tactical surprise achieved by special forces but acknowledge the immense logistical and safety challenges of spending days underground. Both sides use these incidents to shape public perception, but outside verification is limited; much of the available information comes from military statements and accounts that can be difficult to independently confirm.
Implications for Security, Infrastructure, and the Broader Conflict
The short-term impact of Russia’s pipeline infiltration campaign is an urgent shift in Ukrainian defensive engineering and resource allocation. Ukrainian forces now prioritize monitoring, fortifying, and booby-trapping pipes, diverting manpower and materials from other parts of the front. In the long run, the destruction and flooding of pipelines may cripple Ukraine’s ability to restore energy exports or collect transit revenue, undermining economic recovery and sovereignty. These developments underscore a broader lesson: in modern conflicts, civilian infrastructure can quickly become a battlefield, exposing nations to new vulnerabilities and forcing defenders into costly, reactive measures.
Ukrainians are fortifying and flooding underground pipes because Russian troops keep trying to crawl or walk in them #Russia #Gaspipelinehttps://t.co/DAvYraf65F
— Thomas Leach (@OCS_TRLIII) September 17, 2025
While both Russian and Ukrainian sources claim successes and highlight their adaptability, the fog of war makes it difficult to assess the true scale or effectiveness of these operations. What is clear is that the use of pipelines as secret invasion routes marks a new stage in the war’s evolution—one that demands constant vigilance and innovative defensive measures to prevent further erosion of territorial control and civilian safety.
Sources:
Defense News: Russian forces walked inside a gas pipeline to strike Ukrainian troops
Business Insider: Ukraine: Russian troops crawl through pipes to infiltrate, Ukraine floods them