 The Australians received reinforcements the next day with a squadron of Matilda tanks from the 1st Tank Battalion arriving by landing craft at Langemak Bay amidst tight security that was aimed at keeping their arrival secret from the Japanese.Accompanying the tanks was the 26th Brigade; its arrival meant that the 9th Division had now been committed in its entirety.Although on 21 October the Japanese withdrew from Siki Cove, the fighting around Katika continued for four more days as the Japanese attempted to retake it against fierce resistance from the 2/28th.