Walter's first step on assuming the command was to examine thoroughly into the capabilities of defence of the place, to see that the well was in good order, and the supply of water ample, and to send out a foraging party, which, driving in a number of beasts and some cart-loads of forage, would supply his garrison for some time.

The castle he found was less strong than it looked.

The walls were lightly built, and were incapable of withstanding any heavy battering.

The moat was dry, and the flanking towers badly placed, and affording little protection to the faces of the walls; however, the extent of the defences was small, and Walter felt confident that with the force at his command he could resist any sudden attack, unless made in overwhelming force, so that all the faces of the wall could be assaulted at the same time.

He had a large number of great stones brought in to pile against the gate, while others were brought into the central keep, similarly to defend the door should the outer wall be carried.