sentences:  The amphibious landing was undertaken simultaneously with the landings at Humboldt and Tanahmerah Bays to secure Hollandia to isolate the Japanese 18th Army at Wewak.Operations in the area to consolidate the landing continued until 4 May, although US and Japanese forces fought further actions in western New Guinea following a Japanese counter-offensive that lasted until early August 1944.Aitape was subsequently developed into an Allied base of operations and was used by Australian forces throughout late 1944 and into 1945 during the Aitape–Wewak campaign.