The town was strongly fortified; huge towers of immense thickness, and three stories in height, surrounded by deep and wide moats, encircled the city.  The only bridge then in existence was also strongly defended with towers, called ‘Les Tournelles,’ while at the end of the town side of the bridge were large ‘bastilles,’ powerful fortresses which dated from the year 1417, when Henry V. threatened Orleans after his triumphal march through Normandy.  In 1421 the Orleanists defied the victor of Agincourt:  again they were in the agony of a desperate defence against their invaders, ready to sustain all the horrors of a siege.

Equally keen and determined were the English leaders to take Orleans, which they rightly considered as the key of what remained unconquered to them in France.  Both countries looked anxiously on as the siege progressed.  Salisbury commanded the English; he had been up to this point successful in taking all the places of importance in the neighbourhood of Orleans, and that portion of the valley of the Loire was commanded by his forces, both above and below Orleans.

On the approach of the enemy, the inhabitants of Orleans turned out to strengthen the outer fortifications, and to place cannon and catapults on the walls and ramparts.  The priests on this occasion worked as hard as the other citizens, and even the women and children helped with a will.

Besides Dunois, who commanded the besieged garrison, was Raoul de Gaucourt, who had defended Harfleur in 1415; he had but recently returned from imprisonment in England, and was burning to avenge his captivity.  La Hire, Xaintrailles, Coulant, Coaraze, and Armagnac were among the defenders of Orleans.  Many Gascons belonging to the Marshal-Saint Severe and soldiers from Brittany helped to swell the forces of the besieged.

It was on the 12th day of October (1428) that Salisbury crossed the Loire and established his besieging force at the village of Portereau, in front of the strongly defended bridge.  In the meanwhile the besieged had razed the houses and the convent of St. Augustin, in order to prevent the enemy from entrenching themselves so near the city gates.  Salisbury, however, threw up fortifications on the site of St. Augustin’s, and placed a battery of guns opposite to the bridge and its ‘bastilles,’ whence he was able to bombard the town with huge stones.  The English also placed mines below the bridge and the fortresses of the Tournelles.

On the 21st, an assault was made on the bridge and its defences, which was vigorously repulsed; the whole population were in arms, and manned the walls; the women fought by the side of their husbands and brothers.  After a severe fight of four hours, the besiegers were forced to withdraw.

The Tournelles were now mined and counter-mined, and were soon found to be untenable.  The besieged then abandoned this fortification, and retired further back towards the centre of the bridge, which, as well as its approaches, was defended by towers.  Part of the bridge on the side near the English was blown up, and a drawbridge, which could be raised or lowered at pleasure, was thrown across the open space.