Guernica Bombed: The Horror of Modern Warfare

German and Italian warplanes destroyed the Basque market town of Guernica on the afternoon of April 26, 1937, killing an estimated 150 to 1,650 people in what became the most infamous air raid of the twentieth century before World War II. The attack lasted approximately three hours, beginning with explosive bombs that drove residents into the streets, followed by incendiary bombs that set the town ablaze, and interspersed with machine-gun strafing of civilians fleeing through the fields. Guernica had no military defenses and no strategic value beyond a small bridge and a modest arms factory on its outskirts. The Condor Legion, Nazi Germany's expeditionary air force in Spain, carried out the raid in support of General Francisco Franco's Nationalist forces during the Spanish Civil War. The operation served multiple purposes for the Germans: it tested tactics for carpet bombing of civilian areas, it terrorized the Basque population into submission, and it demonstrated the Luftwaffe's capabilities to potential enemies. Hermann Goring later acknowledged that Spain was a useful testing ground for German military technology and doctrine. Franco's regime denied responsibility for decades, blaming the destruction on retreating Republican forces who allegedly set fire to the town. This lie was sustained by Nationalist censorship and by the indifference of Western democracies practicing appeasement. Journalists George Steer of The Times of London and Noel Monks of the Daily Express, who reached Guernica the morning after the attack, provided eyewitness accounts that contradicted the official story and brought international attention to the atrocity. Pablo Picasso's monumental painting "Guernica," completed in June 1937 for the Spanish Republic's pavilion at the Paris International Exposition, transformed the bombing from a wartime atrocity into a universal symbol of the horrors of modern warfare. The painting's fractured, monochrome imagery of screaming figures, a dismembered soldier, a dying horse, and a woman holding a dead child made the invisible visible in a way that journalism could not. Picasso refused to allow the painting to be displayed in Spain until democracy was restored; it arrived at the Museo Reina Sofia in Madrid in 1981, six years after Franco's death.