Lister's Republican division attacked Teruel without any preliminary aerial or
artillery bombardment while snow fell on 15 December 1937. Lister and his fellow commander, Colonel Enrique Fernández Heredia, moved to surround the town. They immediately gained a position on the heights of La Muela, and by evening, they encircled the city. Rey d'Harcourt pulled his defences into the town and, by 17 December, had given up trying to keep a foothold on
La Muela. He had just started a major offensive at
Guadalajara, and the relief of Teruel forced him to abandon that offensive, much to the disgust of his Italian and German allies. The Nationalist relief of Teruel also signified that Franco had given up the idea of a knockout blow to end the war and had accepted a long
war of attrition, to be won by the force of arms and by foreign assistance. Rey d'Harcourt, the Nationalist commander, pulled his remaining defenders back to an area in which he could make a
last stand in the southern part of the town. By
Christmas Day, the Nationalists still occupied a cluster of four key points: the Civil Governor's Building, the
Bank of Spain, the Convent of Santa Clara and the seminary. The Republicans' Radio Barcelona announced that Teruel had fallen, but Rey d'Harcourt and the remnants of the 4,000 man garrison still held out. The siege continued with the fighting being hand to hand and building to building. The Republicans would bombard a building with artillery and then move in with the
bayonet.
Nationalist relief attempts Franco cancelled the Guadalajara offensive on 23 December, but the relief force could not begin its attack until 29 December. Franco could only send messages to Rey d'Harcourt to hold out at all costs. In the meantime, the Republicans pressed home their attack in atrocious weather. The Nationalist counterattack began on schedule on 29 December, with the experienced Generals
Antonio Aranda and
José Enrique Varela in command. The German
Condor Legion covered the attack. By
New Year's Eve, a supreme effort allowed the Nationalists to be on the La Muela Heights Then, the weather actually turned for the worse, with the start of a four-day blizzard in which 120 cm of snow fell and temperatures of −18 °C occurred. The fighting ground to a halt as guns and machines froze, and the troops suffered terribly from
frostbite. The Nationalists suffered the most, as they did not have warm clothing. Many amputations were performed to remove frostbitten limbs. Franco continued to pour in men and machines, and the tide of the battle slowly started to turn. However, the Republicans pressed home their siege, and by
New Year's Day in 1938, the defenders of the convent were dead. The Civil Governor's Building fell on 3 January, but Rey d'Harcourt fought on. The attackers and the defenders were on different stories of the building and fired at each other through holes in the floors. The defenders now had no water, few medical supplies and little food. Their defences were piles of ruins, but they continued to hold out. The Nationalist advances stalled because of the weather, and finally, on 8 January, Rey d'Harcourt surrendered with the
Bishop of Teruel, at his side. Teruel had fallen to the Republicans. Just over a year later, the Republicans, in one of their last acts of the war, killed Rey d'Harcourt and the bishop, along with 41 other prisoners in February 1939. After Rey d'Harcourt's surrender, the civilian population of Teruel had been evacuated, and the Republicans became the besieged and the Nationalists the besiegers.
Nationalist counteroffensive After Rey d'Harcourt's surrender, the Nationalist buildup began to tell on the Republican forces. With the weather clearing, the Nationalists started a new advance on 17 January 1938. Two days later, the Republican leadership finally gave up its scruples about the Battle of Teruel being an all-Spanish operation and ordered the International Brigades to join the struggle. Many of the units had been in the area but in reserve. Celebrities and politicians meanwhile entertained and visited the units. The US communist-sympathising singer
Paul Robeson sang for them on Christmas Eve with a repertoire that included ''
L'Internationale and ended with Ol' Man River''. Future
British Prime Minister Clement Attlee, the left-wing
Labour politician
Ellen Wilkinson and future Labour government official and diplomat
Philip Noel-Baker visited a British unit. Both high commands were now in heated trains near the battlefield and directing their troops in the final part of the battle. Slowly but surely, the Nationalists advanced, and the La Muela heights fell to them. The Republican forces launched fierce counterattacks on 25 January and the next two days, but gains were temporary. Finally, on 7 February, the Nationalists
attacked north of Teruel. That was a weak area since most Republican forces had been concentrated to the south around Teruel itself. A massive
cavalry charge, one of the last in the history of warfare (there were one or two exceptions near the
Caspian Sea during
World War II), broke the Republican defences and scattered them. Aranda and Yagüe swiftly advanced and the victory was complete. The Nationalists took thousands of prisoners and thousands of tons of supplies and munitions. The Republicans ran for their lives if they could. The final battle began on 18 February. Aranda and Yagüe cut off the town from the north and then surrounded it, as the Republicans had accomplished in December. On 20 February, Teruel was cut off from the former Republican capital in
Valencia, and with the Nationalists entering the town, Hernández Saravia gave the order for withdrawal. Most of the army escaped before the route was cut off, but about 14,500 men were trapped. The colourful communist Republican commander
El Campesino was surrounded but eventually broke out to escape. He always claimed that Lister and other communist commanders had left him to his fate in the hope that he would be killed or captured. The Nationalists finally recaptured Teruel on 22 February. The Nationalists found 10,000 Republican corpses in Teruel after the battle was over. ==Aftermath==