They had nothing to fear from the enemy's cavalry, to whom they proved themselves immensely superior, whenever they met during the war, and they had it in their power, for months, to cut the British communications and so oblige them, either to detach so large a force to keep the roads open that they would have been unable to push on the siege, and would indeed have been in danger of being attacked and destroyed by the Irish infantry; or to raise the siege, and fall back upon their bases, Dublin and Waterford.
The only possible explanations that can be offered are--first, that Sarsfield, although a dashing commander in action, was possessed of no military genius whatever; second, that he was prevented from moving by the jealousy of the French commanders-in-chief, who did not wish to see the credit of compelling the enemy to fall back monopolized by the Irish cavalry; or, third, that Sarsfield saw the advantages which could be obtained by throwing himself, with his cavalry, in the rear of the enemy, but deliberately remained inactive rather than leave the French generals to act, unchecked by his presence at headquarters.

It can never be decided to which of these alternatives it was due that the Irish cavalry remained for so long a time inactive, and that William, and after him Ginckle, were permitted, unmolested save by a few detached bodies of horse, to maintain their long line of communications to their base, unchecked.
Upon one of his excursions in the rear of the English army, Captain Davenant's troops dashed down upon a convoy of waggons.

The dragoons who were escorting them were killed or driven off.

The drivers were collected in a group, for Captain Davenant always ordered that these men should not be injured, as they were not combatants, and were in most cases obliged to accompany their teams, which had been requisitioned for the service.
The men were collecting the waggons together, preparatory to setting them on fire, when Walter, on riding near the group of drivers, heard himself called by name.

Turning round, he leapt from his horse and ran up to one of the prisoners.
"My dear John!" he exclaimed, "I am glad indeed to see you.