Reinforcements were needed at Retimo on 20 May

 The 2/11th Battalion withdrew all of its men into the wired perimeter for the night. They did send patrols out to prevent the Germans moving in the direction of Retimo. At 10:30pm, the Australians had taken 84 prisoners and a great number of arms. The Australians had trouble finding Germans hiding in the dark. The 2/11th Battalion commander, Sandover, spoke German, so he questioned prisoners. Sandover also translated German codes, so the Australians were able ask for more mortar bombs, which were delivered by air. 

Overnight, Campbell asked Freyberg for reinforcements. Campbell gave orders for attacks in the morning. He wanted the 2/1st Battalion to eliminate Germans from Hill A. He ordered the 2/11th Battalion to get rid of Germans from Hill A and the sea. The Australian battalions would attack tpwards the north with help from Greek battalions. They would be attacking the southern side of the German forces that were in combat with the Australians. Campbell sent Major Hooper with the Greek battalion on the east. He sent Major Ford from the Welch Regiment with the Greeks on the West. Major Ford was already a liaison to the Greeks.

This is based on the account in "Greece, Crete, and Syria" by Gavin Long