Lat 6° 31' 60S Long 155° 19' 0E   Located in southern Bougainville.

After two Japanese large-scale counterattacks against the American beachead at Torokina, the Japanese withdrew to three main areas: Buka, Numa Numa and Kieta in the east, and the Buin-Mosigetta plains in the south.

Allied Attacks on Mosigetta
November 29, 1943 - April 13, 1944

November 29, 1943
(13th AF) P-39's join USN dive bombers in a strike on the Mosigetta warehouse area

November 30, 1943
(13th AF) Other fighters cover dive bombers attacking in the Mosigetta area, and fighter patrols later the same day.

December 5, 1943
(13th AF): On Bougainville Island in the Solomon Islands, 23 B-25's and 20+ USN dive bombers hit the Monoitu, Aitara Mission, and Mosigetta area.

March 11, 1944
(SOPAC, 13th AF): 43 P-40s bomb the Mosigetta area.

April 13, 1944
17 fighter-bombers hit personnel and supply areas at Mosigetta

Securing Mosigetta from the Japanese
With the fall of Mawaraka the next step was to clear the way to the Puriata. The task fell to 7th Brigade (under Brigadier J Field) on January 23, 1944 the Australian 29th Brigade was relieved. The first move was an inland thrust to secure Mosigetta and drive the Japanese from the area. On 25 January Twen Force, comprising "C" and "D" Companies of 61st Battalion, pushed inland along the Pagana River in the direction of Kupon. Farther inland the commandos were denying the Japanese the track system running through Mosina, Nigitan, and Sisiruai. The 9th Battalion left Mawaraka next day and struck east towards Mosigetta along the south bank of the Hupai.

Australian Capture
Within a fortnight 61st Battalion had penetrated Nigitan and Mosina, and turned south towards the 9th Battalion objective. Seven days down the track from Mosina saw the 61st poised near Mievo, a few hundred yards north of Mosigetta. Meanwhile along the Mawaraka-Mosigetta Road the going had not been easy for the 9th Battalion. Feeling a way thWrough jungle swamps often shoulder-deep, pinned down in the mud, sleeping in water, and hampered by a supply line kept open only by the sweat of the native carriers and by the tractor towed jeep trains, they broke into Mosigetta on 16 January, half an hour ahead of the force moving down from Kupon.

Inland Tracks
From Toko a track ran inland a few hundred yards above the Puriata in the direction of Darara on the No. I Government Road to Buin. This road was a continuation of the track south from Kupon through Mosigetta to Darara and on to the main Puriata ford. An eastward move from Toko towards Darara would close the river crossing, cutting the escape route of the Japanese retreating before the two battalions reorganising at Mosigetta for the Darara drive. On 25 February 9th Battalion was withdrawn for a well-earned rest at Motupena Point. From Mosigetta the 61st Battalion fought its way south-east, crossed the Puriata, and by 15 March was established in the Horinui region, threatening the approaches to No. 2 Government Road.