The numbers reveal the horror of the Great War: Sixty-five million soldiers fought. Nine million killed in combat. Nearly 20 million wounded. 2014 marks the 100th anniversary of the start of World War I, the conflict that reshaped Europe, redefined international power structures, introduced the U.S. as a global superpower and fundamentally changed the role government played in people’s everyday lives.

Photographer Peter Macdiarmid collected modern photos from around Europe and overlaid World War I-era images, giving a sense of how much–and how little–has changed since the War to end all Wars.