Ukraine is inflicting losses on Russian forces at a rate of around seven to one, according to Britain’s most senior Army officer, offering a stark insight into how the war has evolved nearly four years after Moscow’s invasion.
Speaking at the International Armoured Vehicles Conference at Farnborough International Exhibition Centre, the Chief of the General Staff, General Sir Roly Walker, said Ukrainian forces had reached what he described as a “steady state level of lethality” on the battlefield.
“The Ukrainians have a steady state level of lethality measured in about seven to one on a kill ratio,” he said.
Heavy Russian losses laid bare
General Sir Roly’s comments follow new figures from the Ministry of Defence, which estimate that around 415,000 Russian soldiers were killed or gravely injured in Ukraine last year alone.
According to the data, attack drones were responsible for roughly 80 per cent of those casualties. In December 2025, Ukrainian forces struck 33,019 Russian troops using uncrewed aerial vehicles, underlining the central role drones now play in modern warfare.
“Tactically, that battlefield is being reshaped by that lethality,” the Army chief said.
A battlefield transformed by drones
General Sir Roly said Ukrainian forces are now achieving effects once thought impossible without major platforms.
“Soldiers in Ukraine are, increasingly, sinking ships beyond the line of sight, and they are holding air forces at bay beyond the horizon,” he said.
He added that drone pilots, including civilian drone operators, are rewriting the rules of anti-armour warfare, accelerating the pace of change on the front line and challenging traditional military doctrines.
Winning battles versus winning wars
Despite Ukraine’s battlefield effectiveness, General Sir Roly warned that military success alone is not enough to secure victory.
“Armies may well be able to win the battles, but it takes nations to win wars,” he said.
He argued that modern deterrence extends far beyond the front line.
“Deterrence today is not just about the boots on the ground at the front. It’s about the ability to regenerate, outproduce and outlast from the back to the front.”
Russia ‘should not be underestimated’
The Army chief also cautioned against complacency, stressing that Russia continues to adapt to Ukrainian innovation.
Moscow, he said, “should not be taken too lightly”, as Russian forces are constantly adjusting their tactics in response to new technologies and methods employed by Kyiv.
His remarks echo warnings from the Chief of the Defence Staff, Admiral Sir Tony Radakin’s successor Sir Rich Knighton, who said in December that the “whole nation” would need to step up to ensure Britain could continue to function during a major crisis.
Sir Rich made the comments during his first annual lecture at the Royal United Services Institute, emphasising that future conflicts will demand resilience not just from armed forces, but from society as a whole.
