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The Spanish Civil War did not end in Madrid or Barcelona. In a very real sense, it ended in a conference room in Munich, hundreds of miles away.

In this week’s podcast, I concluded my exploration of the Battle of the Ebro, the last major Republican offensive of the war. But to understand why the Ebro failed, we must look beyond the battlefield tactics to the geopolitical betrayal that made defeat inevitable.

The Gamble on the Ebro

In the summer of 1938, the Spanish Republic launched a desperate attack across the Ebro River. The goal was not just military—it was diplomatic. Prime Minister Juan Negrín hoped that by proving the Republic still had fight in it, he could convince Britain and France to lift their arms embargo and stand up to the fascist powers backing Franco.

For the soldiers on the ground, particularly the volunteers of the International Brigades, this meant enduring hell. As Adam Hochschild describes in Spain in Our Hearts, men fought for weeks without sleep, under a sun that reached 134°F, while German and Italian aircraft strafed their positions. They were fighting for time, hoping that the democracies would finally wake up.

The Shadow of Munich

But while the Republicans bled on the Ebro, Neville Chamberlain was flying to Berchtesgaden. The Munich Agreement of September 1938, which handed the Sudetenland to Hitler, sent a clear message: the Western powers would do anything to avoid war.

For Spain, this was a death sentence. By appeasing Hitler in Czechoslovakia, Britain and France signaled that they would never intervene to save the Spanish Republic. As one brigadier told Alvah Bessie on the front lines: “Mr. Chamberlain is going to sell the Czechs down the river… mark my words.”

The betrayal was total. Not only did the democracies refuse to help, but they actively facilitated the rise of fascism. Franco sent Chamberlain his “warmest congratulations” for the Munich agreement. The irony was bitter: the “peace in our time” that Chamberlain bought was paid for with the lives of Czechs and Spaniards.

StalinStalin Joseph Vissarionovich Stalin (18 December 1878 – 5 March 1953) was a Soviet politician, dictator and revolutionary who led the Soviet Union from 1924 until his death in 1953. Read More’s Pivot

The other major player watching Munich was Joseph StalinStalin Joseph Vissarionovich Stalin (18 December 1878 – 5 March 1953) was a Soviet politician, dictator and revolutionary who led the Soviet Union from 1924 until his death in 1953. Read More. Realizing that the West would rather carve up a democracy than fight Hitler, Stalin drew his own cynical conclusions. He began to withdraw Soviet support from Spain, recalling advisors (often to be shot) and cutting off arms shipments.

This was the beginning of the pivot that would lead to the Nazi-Soviet Pact a year later. If the West wouldn’t fight fascism, Stalin decided he would make a deal with it.

The Farewell

In a final, tragic gesture, Negrín announced the withdrawal of the International Brigades in late 1938, hoping this would pressure Franco to send home his German and Italian allies. It was a futile hope. The volunteers left the front lines, crossing the Ebro for the last time, leaving behind thousands of their comrades in unmarked graves.

The Battle of the Ebro and the Munich Agreement are twin tragedies. They represent the moment when the world decided that the fight against fascism wasn’t worth the cost—a decision that would lead, inevitably, to the Second World War.

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Transcript

Nick: Welcome again to the Explaining History podcast.

If you are a student, don’t forget our Russian Revolution Masterclass is on Sunday, January 25th. It’s going to be a game-changer for your exam technique. Get your tickets via the link in the show notes.

Yesterday, we looked at Part 1 of the Battle of the Ebro, exploring why the Republic launched this desperate offensive to convince Britain and France to intervene. Today, we look at the tragic conclusion.

Drawing from Adam Hochschild’s Spain in Our Hearts, we see the Nationalist counter-attack. Franco’s engineers opened river dams in the Pyrenees to flood the Ebro, sweeping away Republican pontoon bridges. Then came the air power: 140 bombers and 100 fighters pounded the trapped troops.

Louis Fischer, a journalist visiting the front, described the scene as a “Spanish black hell.” American volunteers like Alva Bessie fought for 13 days without sleep, bathing, or proper food. The heat was overwhelming—up to 134°F in the sun. Men put leaves in their caps to ward off sunstroke, but dehydration and dysentery (“the old nemesis”) plagued the ranks.

Despite this, morale held for a surprisingly long time. But the news from Europe was grim. A steady trickle of reports reached the front: Neville Chamberlain was flying to meet Hitler. The Munich Agreement was being hammered out.

As one soldier told Bessie: “Mr. Chamberlain is going to sell the Czechs down the river.” He was right. In September 1938, Britain and France agreed to the dismemberment of Czechoslovakia. As Hochschild writes, “The murderers were guaranteeing to respect the corpse.”

This geopolitical betrayal destroyed the Republic’s strategy. Negrín had gambled everything on the hope that the democracies would fight fascism. Munich proved they wouldn’t.

Stalin was watching too. He realized the West would never step in to save Spain. He began to lose interest, withdrawing Soviet advisors (many of whom were recalled to Moscow and shot) and cutting arms shipments. By late 1938, the US Socialist Party newspaper was already asking a prescient question: “Will Hitler and Stalin make a deal?”

In a final attempt to gain diplomatic leverage, Negrín announced the unilateral withdrawal of the International Brigades, hoping to shame Franco into sending home his German and Italian troops. It didn’t work. The volunteers left the front, crossing the Ebro for the last time.

The failure at the Ebro was written before it began, but it was sealed at Munich. Chamberlain bought “peace in our time” at the expense of both the Czechs and the Spanish Republic. It is a part of the period we rarely address: Munich and the Ebro rhyme. They go in concert with one another as twin failures of the democratic world.

I’ll leave you there. Check out Spain in Our Hearts—it’s a wonderful book. Catch you on the next broadcast. Bye.