Formed on 21 June 1942, it initially consisted of part-time Militia units and was under the command of Major General Basil Morris's New Guinea Force.
Reinforced by veteran Second Australian Imperial Force units, Maroubra Force was instrumental in blunting the Japanese advance on Port Moresby, fighting it to a standstill in September, before elements of the 7th Division undertook a counter-attack in October and November 1942, which drove the Japanese back to their beachheads around Buna–Gona, which was the scene of heavy fighting between November 1942 and January 1943.
[1] The Papuan Infantry Battalion of about 300 native troops with white officers, was already north of the Owen Stanley Range at the entrance of the Kokoda Track.
While authors such as Eustace Keogh, Brune and McCarthy largely fall silent on the formation after the Battle of Ioribaiwa in mid-September,[8][9][10] Chant states that Maroubra Force later participated in the fighting around Gona.
[3] It was subsequently evacuated to Port Moresby before returning to Australia, where the 30th Brigade was eventually disbanded, with many of its personnel being redistributed to 2nd AIF units.
[28] Maroubra Force, and its commanding officers Honner and Potts are sometimes cited as some of "the men who saved Australia", having played an important part in the successful defence of Port Moresby.