The Battle of Fuentes del Ebro became the final test of Joe Dallet’s resolve to prove himself not merely a political officer but a soldier willing to share the danger faced by his men. In an assault on a fascist-held town, he went over the parapet first and was mortally wounded within yards of his own trenches. His death came amid divisions inside the Republican ranks as well as the wider struggle against fascism.

Political Fracture and the Decision to Attack

The Republican cause was under severe pressure: Dallet and his men were outnumbered and outgunned, while German and Italian aircraft and artillery reinforced the fascist forces. The Republican side was also weakened by fierce internal conflict. In a letter to Katherine Oppenheimer dated May 12, 1937, Dallet warned that his Spanish communist superiors had promised a “cleaning out” of anarchists among the troops. By autumn, he was supervising trials of deserters; one account held that a handful of those men may have been executed. Such actions helped make Dallet deeply unpopular with his own soldiers, some of whom regarded him as an ideological zealot. A friend described their feeling toward him as near hatred, and discontent had grown into talk of removing him.

A few days before the attack, an old friend found Dallet alone at night in a small hut, sitting by the faint light of a kerosene lamp. Dallet admitted that he felt lonely and knew how unpopular he had become. He was determined to show his men that he was not one of the political officers who stayed “safe behind the line”; he would prove his courage by being the first man over the parapet. His friend warned that this might be a foolish way to lead a battalion, but Dallet would not be dissuaded. Four days later, as his battalion went into battle, he acted on that resolve.

The Assault and Dallet’s Death

At 1:40 p.m., Joe Dallet went over with the First Company on the left flank, where the machine-gun fire was heaviest. He had advanced only a few yards from the trenches when he was hit in the groin. Though mortally wounded and exposed to enemy fire, he refused to let the first-aid men reach him. As he struggled to crawl back toward the trenches, a second burst of machine-gun fire killed him. He was barely thirty years old. The courage he meant to demonstrate was unmistakable, but its cost was immediate and irreversible.

The Widow and the Making of a Martyr

Nelson learned of Dallet’s death while traveling in Paris. Dallet had written to Katherine(Kitty)Oppenheimer that Nelson would be passing through, so she traveled from London to meet him before continuing to Spain. Nelson arranged to tell her in the lobby of her hotel. The news overwhelmed her: she collapsed against him, clung to him, and asked what she was to do now. On impulse, Nelson invited her to live with him and his wife, Margaret, in New York. Kitty accepted only after he persuaded her not to go on to Spain, where she had considered volunteering as a hospital worker.

Kitty returned to the United States at twenty-seven, a widow whose loss was quickly given a public political meaning. The Communist Party USA commemorated Dallet as a man who had devoted himself to stopping fascism and fashioned him into a martyr of the working class. With Kitty’s permission, in 1938 the Party published Letters from Spain, collecting the letters he had written to her. The private correspondence thus became part of the public remembrance of a death that had begun as Dallet’s attempt to prove his courage to men who distrusted him.

From Battlefield Death to Public Memory

The political meaning attached to Dallet’s death changed sharply in its retelling. Before the battle, discontent among his own troops had included talk of removing him; afterward, the Communist Party presented his sacrifice as proof of devotion to the anti-fascist cause. Party chief Earl Browder described Dallet as having joined those who gave “themselves completely to the task of stopping fascism.” The contrast between the unpopular commissar and the celebrated martyr did not erase the divisions within the Republican ranks; it showed how a death on the battlefield could be made to carry a larger public meaning.