 During the siege, the 10th Regiment allegedly pressed the attack from the west and fought its way into the outskirts two or three times, but was forced to withdraw each time under withering artillery and small-arms fire.In its drive on Yongdok the division is said to have been subjected to almost constant bombardment from UN aircraft and naval vessels; even at night the troops were apparently not given any respite, for prisoners complained that artillery opened up with heavy fire after the naval and air attacks ceased.To illustrate the terrific casualties that the division sustained in these battles, one POW related that in a single naval barrage 700 men were killed and huge stores of supplies and equipment were destroyed.