The French still continued to throw succours into Terouenne, in spite of the vigilance of the English. In this service no one was more active than the Duke of Angoulême, the heir-apparent to the crown, and afterwards Francis I. When the siege had lasted about six weeks, and the whole energy of the British army was roused to cut off these supplies of provisions and ammunition, the French advanced in great force to effect a diversion in favour of the place. A formidable display of cavalry issued from Blangy, and marched along the opposite bank of the Lis. As they approached Terouenne they divided into two bodies, one under Longueville, the other under the Duke of Alençon. Henry wisely followed the advice of Maximilian, who knew the country well, and had before this won two victories over the French in that very quarter. The troops were drawn out, and Maximilian crossed the river with his German horse and the English archers, also mounted on horseback. Henry followed with the infantry.

The French cavalry, who had won a high reputation for bravery and address in the Italian campaigns, charged the united army brilliantly; but speedily gave way and rode off. The English archers and German horse gave chase; the French fled faster and faster, till in hot pursuit they were driven upon the lines of the main body, and threw them into confusion. This was, no doubt, more than was intended; for the probable solution of the mystery is, that the retreat of the advanced body of cavalry was a feint, to enable the Duke of Alençon to seize the opportunity of the pursuit by the English to throw the necessary supplies into the town. This he attempted. Dashing across the river, he made for the gates of the town, whence simultaneously was made an impetuous sally. But Lord Herbert met and beat back Alençon; and the Earl of Shrewsbury chased back the sallying party. In the meantime the feigned retreat of the decoy cavalry, by the brisk pursuit of the German and English horse, had become a real one. After galloping almost four miles before their enemies, they rushed upon their own main body with such fiery haste that they communicated a panic. All wheeled about to fly; the English came on with vehement shouts of "St. George!" "St. George!" The French commanders called in vain to their terror-stricken men to halt, and face the enemy; every man dashed his spurs into the flanks of his steed, and the huge army, in irretrievable confusion, galloped away, without striking a single blow. The officers, while using every endeavour to bring the terrified soldiers to a stand, soon found themselves abandoned and in the hands of the enemy. The Duke de Longueville, the famous Chevalier Bayard, Bussy d'Amboise, the Marquis of Rotelin, Clermont, and La Fayette, men of the highest reputation in the French army, were instantly surrounded and taken, with many other distinguished officers. La Palice and Imbrecourt were also taken, but effected their escape.

When these commanders, confounded by the unaccountable flight of their whole army, were presented to Henry and Maximilian, who had witnessed the sudden rout with equal amazement, Henry, laughing, complimented them ironically on the speed of their men, when the light-hearted Frenchmen, entering into the monarch's humour, declared that it was only a battle of spurs, for they were the only weapons that had been used. The Battle of Spurs has ever since been the name of this singular action, though it is sometimes called the Battle of Guinegate, from the place where the officers were met with. This event took place on the 16th of August.

The garrison of Terouenne, seeing that all hope of relief was now over, surrendered; but, instead of leaving a sufficient force in the place to hold it, Henry, at the artful suggestion of the emperor, who was anxious to destroy such a stronghold on the frontiers of his grandson Charles, Duke of Burgundy, first wasted his time in demolishing the fortifications of the town, and then, under the same mischievous counsel, perpetrated a still grosser error. Instead of marching on Paris, he sat down before Tournay, which Maximilian wished to secure for his grandson Charles. It fell after eight days' siege.

Here ended this extraordinary campaign, where so much had been prognosticated, and what was done should have only been the stepping-stones to infinitely greater advantages. But Henry entered the city of Tournay with as much pomp as if he had really entered into Paris instead. Wolsey received the promised wealthy bishopric, and Henry gratified his overweening vanity by his favourite tournaments and revelries. Charles, the young Duke of Burgundy, accompanied by his aunt Margaret, the Duchess-Dowager of Savoy, and Regent of the Netherlands, hastened to pay his respects to the English monarch, who had been so successfully fighting for his advantage.

During the reign of Henry VII., Charles had been affianced to Mary, the daughter of Henry, and sister of the present King of England. As he was then only four years of age, oaths had been plighted, and bonds to a heavy amount entered into by Henry and Maximilian for the preservation of the contract. The marriage was to take place on Charles reaching his fourteenth year. That time was now approaching; and, therefore, a new treaty was now subscribed, by which Maximilian, Margaret, and Charles were bound to meet Henry, Catherine, and Mary in the following spring to complete this union.

Meantime, the Swiss, discovering what sort of an ally they had got, entered into a negotiation with Tremouille, the Governor of Burgundy, who paid them handsomely in money, promised them much more, and saw them march off again to their mountains. Relieved from those dangerous visitants, Louis once more breathed freely. He concentrated his forces in the north, watched the movements of Henry VIII. with increasing satisfaction, and at length saw him embark for England with a secret resolve to accumulate a serious amount of difficulties in the way of his return. France had escaped from one of the most imminent perils of its history by the folly of the vainglorious English king. Yet he returned with all the assumption of a great conqueror, and utterly unconscious that he had been a laughing-stock and a dupe.

We have seen that James IV. of Scotland sent his declaration of war to Henry whilst he was engaged at the siege of Terouenne. Among the causes of complaint which James deemed he had against Henry was the refusal to deliver up the jewels left by Henry's father to the Queen Margaret of Scotland—a truly dishonest act on the part of the English monarch, who, with all the wasteful prodigality peculiar to himself, inherited the avaricious disposition of his father. No sooner, therefore, did Henry set out for France, than James despatched a fleet with a body of 3,000 men to the aid of Louis, and by his herald at Terouenne, after detailing the catalogue of his own grievances, demanded that Henry should evacuate France. This haughty message received as haughty a reply, but James did not live to receive it.

In August, whilst Henry still lay before Terouenne, on the very same day that the Scottish herald left that place with his answer, the peace between England and Scotland was broken by Lord Home, chamberlain to King James, who crossed the Border, and made a devastating raid on the defenceless inhabitants. His band of marauders, on their return, loaded with plunder, was met by Sir William Bulmer, who slew 500 of them upon the spot, and took 400 prisoners. Called to action by this disaster, James collected on the Burghmuir, to the south of Edinburgh, such an army as, say the writers of the time, never gathered round a king of Scotland. Some state it at 100,000 men; the lowest calculation is 80,000.

James passed the Tweed on the 22nd of August, and on that and the following day encamped at Twizel-haugh. On the 24th, with the consent of his nobles, he issued a declaration that the heirs of all who were killed or who died in that expedition, should be exempt from all charges for wardship, relief, or marriage, without regard to their age. He then advanced up the right bank of the Tweed, and attacked the Border castle of Norham. This strong fortress was expected to detain the army some time, but the governor, rashly improvident of his ammunition, was compelled to surrender on the fifth day, August 29th. Wark, Etall, Heaton, and Ford Castles, places of no great consequence, soon followed the example of Norham. That accomplished, James fixed his camp on Flodden Hill, the east spur of the Cheviot Mountains, with the deep river Till flowing at his feet to join the neighbouring Tweed. In that strong position he awaited the approach of the English army.