 Realising that they had only faced a series of probes the previous night, rather than a major attack, and as these actions may have been in preparation for a heavier attack, a vigorous defence was subsequently prepared by the Australians with the reserve companies moved into blocking positions to strengthen the forward defences.The defenders endured steady shelling and harassing fire, while after dark The Hook was probed again, this time by a group of about 20 PVA.The force was subsequently engaged by an Australian standing patrol from D Company at 21