Ypres had a numerous garrison, commanded by several knights of experience. The works were very strong, and every assault was repulsed with heavy loss. One of these was led by Sir Hugh Calverley. The force crossed the ditches by throwing in great bundles of wood with which each of the foot-men had been provided, and having reached the wall, in spite of a hail of cross-bow bolts and arrows, ladders were planted, and the leaders endeavoured to gain the ramparts. Sir Hugh Calverley succeeded in obtaining a footing, but for a time he stood almost alone. Two or three other knights, however, sprang up. Just as they did so one of the ladders broke with the weight upon it, throwing all heavily to the ground.