Tanks in the drone age: is armour becoming obsolete?
The tank, that iron symbol of 20th-century warfare, is facing the most serious challenge to its battlefield relevance since it first rumbled across the Somme in 1916. Cheap, AI-guided drones are destroying armoured vehicles at a rate that’s forcing military planners to ask a deeply uncomfortable question: are we watching the cavalry moment all over again?
A brutal classroom in Ukraine
The war in Ukraine has been unsparing in its lessons. Ukrainian and Russian forces have both lost hundreds of tanks to first-person-view drones that cost as little as $400 to build. Russia alone is estimated to have lost over 3,000 tanks since February 2022, according to open-source trackers at Oryx. Many were destroyed not by other tanks or anti-tank missiles, but by drone operators sitting kilometres away in relative safety.
That’s a staggering figure. And it’s made Western defence ministries deeply nervous about the billions they’ve committed to armoured vehicle programmes.
The cavalry comparison isn’t quite right — but it’s close
When the First World War began, cavalry was still considered the decisive arm of manoeuvre. Within months, it was largely irrelevant against barbed wire and machine guns. The parallel with tanks today is tempting, but military historians urge caution. Tanks didn’t disappear after their first reverses. They adapted. So the real question isn’t whether tanks are dead. It’s whether they can adapt fast enough.
Still, the speed of change is alarming. Drones guided by artificial intelligence can now identify, track and strike armoured targets with minimal human input. Electronic warfare suites, once the domain of major powers, are being miniaturised and fitted to platforms that cost a fraction of a main battle tank’s $10 million price tag.
“We are in a period of genuine transition, and anyone who tells you they know exactly where it ends is not being honest with you,” said one senior NATO official, speaking on condition of anonymity.
Europe’s investment dilemma
The pressure on European governments is acute. Germany’s Rheinmetall is pressing ahead with deliveries of the Lynx infantry fighting vehicle. France is continuing development of its MGCS next-generation tank programme. Britain has committed to upgrading its Challenger 3 fleet. These are long-cycle, expensive decisions made in a world that’s changing quarterly, not decadally.
Defence budgets are being pulled in two directions simultaneously: maintain credible heavy armour on NATO’s eastern flank, or pivot resources toward drone swarms, counter-drone systems and electronic warfare. Most governments simply don’t have the money to do both properly.
What comes next
The honest answer is that nobody is entirely sure. Hybrid formations — tanks working alongside drone screens and AI-enabled surveillance — are being tested in exercises across Europe. But doctrine takes years to mature, and the next conflict won’t wait.
What Ukraine has confirmed is that the battlefield is changing faster than procurement cycles. Governments that bet wrong won’t know it until it’s far too late to correct.
