Ostasiengeschwader
The destroyers entered Simpson Harbour and Matupi Harbour at night searching for the German East Asia Squadron. Landing parties from the destroyers were sent ashore to demolish the telephones in the post offices in Rabaul and at the German gubernatorial capital of Herbertshöhe (now Kokopo), located to the south-east. Unable to locate the radio station, the Australian warships threatened to bombard nearby settlements if the radio station continued to transmit, before withdrawing.