Tilly having thus raised the siege, and thrown a body of troops into Huy, rejoined the confederate army, which had been augmented ever since his departure with six thousand men from Brandenburgh, and ten thousand Hessians commanded by the landgrave in person.

Such was the vigilance of Luxembourg, that William could not avail himself of his superiority.
In vain he exhausted his invention in marches, counter-marches, and stratagems, to bring on a general engagement; the French marshal avoided it with such dexterity as baffled all his endeavours.

In the course of this campaign the two armies twice confronted each other; but they were situated in such a manner that neither could begin the attack without a manifest disadvantage.

While the king lay encamped at Court-sur-heure, a soldier, corrupted by the enemy, set fire to the fusees of several bombs, the explosion of which might have blown up the whole magazine and produced infinite confusion in the army, had not the mischief been prevented by the courage of the men who guarded the artillery; even while the fusees were burning, they disengaged the waggons from the line, and overturned them down the side of a hill, so that the communication of the fire was intercepted.

The person who made this treacherous attempt being discovered, owned he had been employed for this purpose by the duke of Luxembourg.