The city of Toulouse, the regional capital, put up a fierce resistance under the command of Marshal Soult, who defended it tenaciously.

One British and two Spanish divisions were badly mauled in bloody fighting on 10 April, with Allied losses exceeding French casualties by 3,000.

Wellington's entry on the morning of 12 April was acclaimed by a great number of French Royalists, validating Soult's earlier fears of potential fifth column elements within the city.

Following their successful invasion of France earlier in the year, an allied army of the Sixth Coalition, composed of British, Portuguese and Spanish troops under the supreme command of the Field Marshal Arthur Wellesley, Marquess of Wellington, laid siege to the city of Toulouse, one of the few remaining urban centres in France still loyal to Napoleon.

After Soult's defeat by Wellington at the Battle of Orthez in late February 1814, the French Marshal retreated north behind the river Adour to Saint-Sever.

Fearful that the Spanish would plunder the French countryside and incite a guerrilla war, Wellington put his allies on the British payroll and supply system.

Meanwhile, on 17–18 March, in a raid with 100 French cavalrymen, Captain Dauma circled the Allied army's south flank and attacked Saint-Sever where he captured 100 men.

On 8 April, in a fine charge, the British 18th Hussars under Lieutenant-colonel Sir Henry Murray seized the bridge at Croix d'Orade on the Hers.

To attack the city from the north, Wellington's main force would have to cross to the east bank of the Garonne, then drive south-east down the corridor between the two rivers.

The Heights of Calvinet (also known as Mont Rave) situated east of the city and west of the Hers River, were fortified with multiple redoubts, forming a formidable defensive stronghold.

Once he reached a point east of the city, Beresford would veer west and attack the Heights with the Hussars protecting his south flank.

[11] In the western sector, General Hill's troops successfully pushed back the French outposts, engaging in a relatively minor skirmish that resulted in approximately 80 casualties for his forces.

The Spanish infantry forged uphill and gained a momentary foothold in a road cut, but they were counter-attacked by a cloud of French skirmishers and soon sent fleeing.

[15][16] Soult maintained control of Toulouse throughout the day on April 11, but upon observing Allied cavalry advancing along the Toulouse-Carcassonne road, he made the strategic decision to withdraw his forces from the city.

Wellington's message implied that he suspected Soult of seeking to maintain control over his army for potential Napoleonic machinations.

By 15 April, Marshal Suchet at Perpignan had accepted the evidence, placed himself at the disposition of the new government and asked Wellington for an armistice.

The last major action of the war occurred on 14 April at the Battle of Bayonne, when the French commander Thouvenot led a sortie from the besieged city against the Allied lines.

On 17 April, Soult at last received a dispatch from Berthier which formally announced the Emperor's abdication and consequent cessation of hostilities in all quarters.

From the French viewpoint, the capture of Toulouse was a hollow triumph, as their army remained intact despite ceding ground, and Wellington's forces suffered significant casualties and depleted their supplies.