The siege of Liège took place in the fall of 1468 by the troops of the Duke of Burgundy, Charles the Bold, after the third anti-Burgundian uprising in the Principality of Liège
On the night of October 29, 1468, during the Siege of Liège, about six hundred Franchimontois, men from Franchimont, unsuccessfully attacked the besieging Burgundian army, aiming to kill or capture their leaders, Duke Charles the Bold and King Louis XI gain weight.
The people of Liège rebelled against the Prince-Bishop Louis of Bourbon, who was supported by Charles the Bold, the Duke of Burgundy, and the French King Louis XI, who had previously been allied with the Liège people. Philippe de Commynes, the chronicler, speaks of 600 men from Franchimont marching to Liège to kill the duke and the king who were encamped on the heights of the city (Sainte Walburge).
On the night of October 29th to 30th, a group of six hundred men, the "Six Hundred Franchimontois", ascended to Sainte-Walburge, where the enemy camp was located. They rely on the element of surprise to capture the Duke of Burgundy and the King of France and thus reverse the balance of power. Once there, the men manage to overpower the guards, but they waste time fighting the Burgundian soldiers instead of going to where the leaders live in the camp. So they have time to organize a counter-offensive and the Franchimontois are all decimated.
The next day, the Duke ordered the destruction of the city in retaliation.