Scorching temperatures across Europe have turned historic battlefields into tinderboxes, prompting a wave of wildfires that are now detonating unexploded munitions left over from the two world wars. In the Dutch province of Limburg, a bomb disposal team was rushed to woodland near the site of fierce 1944 combat as flames threatened to trigger buried ordnance. Similar incidents have been reported in France, Belgium and Germany, where heat‑induced explosions have forced emergency crews to confront a lethal legacy long thought dormant.
Blazes Uncover Lethal Legacy
In the tinder‑dry forests outside Bordeaux, a massive wildfire ripped through undergrowth and exposed a cache believed to contain Second World War‑era ammunition. Further north, in the eastern Belgian province of Liège, Governor Hervé Jamar told reporters that “a few sporadic detonations” had been heard recently, adding that emergency services were adapting their tactics to account for munitions hidden in the fire zones. He stressed that no fire crews had been placed in danger, although local media circulated images of a firefighter handling a rusted bomb.
The High Fens, a peat‑bog forest straddling the Belgian‑German border, has become a particular flashpoint. During the Second World War, the area was littered with booby traps, bombs and mines; in the first four years after Germany’s surrender in 1945, those devices claimed six civilian lives, according to Bernard Collard, a local historian who runs the Truschbaum Museum near the German border. “When you go into a forest like this, you are not sure where the explosives are,” Collard warned while standing amid blueberry bushes that now blanket old foxholes and artillery craters.
The Human Cost on the Frontlines
Collard, who is authorised to scan former battlefields with a metal detector, has recovered mortar shells, machine guns, helmets, cigarette cases and, on one occasion, a human skeleton. “You never know what you might come across, and you shouldn’t take it lightly,” he said, noting that he regularly works alongside the Belgian de‑mining squad. “It’s part of our history. We live with it,” he added, underscoring how the past continues to shape present‑day risks.
The danger is amplified by heat. Jonas Tepe, a spokesperson for North Rhine‑Westphalia, explained that unexploded ordnance becomes far more volatile around wildfires because rising temperatures can trigger the explosives. His warning came as the Belgian Ministry of Defence disclosed that it receives requests from the region almost every week to assist in disarming munitions, although it does not label the area a “hotspot” compared with other parts of the country.
Drought and Heat: A Perfect Storm
Beyond the immediate blaze, drought has been laying bare the continent’s buried arsenal. In Slovakia, a falling Danube revealed two naval mines that police retrieved and later detonated in a controlled explosion. Hungarian authorities closed Budapest’s Margaret Bridge after a Second World War‑era bomb surfaced at the bridge’s base in receding water. As the Rhine shrank, German crews uncovered another Second World War bomb lurking in the riverbed.
These findings align with a World Weather Attribution study published in July, which linked the January’s heavy rainfall — spurring rapid vegetation growth — to the summer’s tinder‑box conditions when combined with drought, low humidity and stiff winds. Christina Greene, a researcher at the University of Arizona who co‑authored a paper with SOAS scholar Sarah Njeri on Europe’s wildfires and unexploded ordnance risk, observed that “the legacy of war keeps creeping up” because of climate change. She added, “It’s reliving the legacies of war and conflict in a way that we haven’t had to deal with in a while in certain places.”
Why it Matters
The convergence of climate‑driven wildfires and dormant wartime explosives presents a fresh, multidimensional threat that challenges emergency responders, historians and policymakers alike. As temperatures rise and weather patterns shift, the continent’s “climatic luck” is running out, forcing societies to confront not only the ecological fallout of fires but also the lethal remnants of past conflicts that lie just beneath the surface. Effective mitigation will require coordinated investment in detection technology, specialised training for fire and bomb disposal units, and public awareness campaigns that treat these hidden hazards as an urgent, present‑day concern rather than a footnote in history.
