Big wars are tragedies for the people and countries that fight them. They also transform how the world prepares for conflict, with momentous consequences for global security. Britain, France and Germany sent observers to the American civil war to study battles like Gettysburg. The tank duels of the Yom Kippur war in 1973 accelerated the shift of America’s army from the force that lost in Vietnam to the one that thumped Iraq in 1991. That campaign, in turn, led China’s leaders to rebuild the People’s Liberation Army into the formidable force it is today.
The war in Ukraine is the largest in Europe since 1945. It will shape the understanding of combat for decades to come. It has shattered any illusions that modern conflict might be limited to counterinsurgency campaigns or evolve towards low-casualty struggles in cyberspace. Instead it points to a new kind of high-intensity war that combines cutting-edge tech with industrial-scale killing and munitions consumption, even as it draws in civilians, allies and private firms. You can be sure that autocratic regimes are studying how to get an edge in any coming conflict. Rather than recoiling from the death and destruction, liberal societies must recognise that wars between industrialised economies are an all-too-real prospect—and start to prepare.
As our special report explains, Ukraine’s killing fields hold three big lessons. The first is that the battlefield is becoming transparent. Forget binoculars or maps; think of all-seeing sensors on satellites and fleets of drones. Cheap and ubiquitous, they yield data for processing by ever-improving algorithms that can pick out needles from haystacks: the mobile signal of a Russian general, say, or the outline of a camouflaged tank. This information can then be relayed by satellites to the lowliest soldier at the front, or used to aim artillery and rockets with unprecedented precision and range.