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Finisterre Range campaign

Markham and Ramu Valley – Finisterre Range campaign
Part of World War II, Pacific War
Battle for Shaggy Ridge 2.jpg
Members of 'C' Company, Australian 2/9th Infantry Battalion, digging in at a newly occupied part of Shaggy Ridge on 23 January 1944
Date 19 September 1943 – 24 April 1944
Location Finisterre Range, Territory of New Guinea
Result Allied victory
Belligerents
 Australia
 United States
 Japan
Commanders and leaders
Australia George Vasey Empire of Japan Masutaro Nakai
Units involved

7th Division

11th Division

18th Army

  • Nakai Detachment
Strength
~ 17,000 ~ 12,000
Casualties and losses
204 killed
464 wounded
800 killed
400 wounded

7th Division

18th Army

The Markham and Ramu Valley – Finisterre Range campaign, was a series of actions in the New Guinea campaign of World War II. The campaign began with an Allied offensive in the Ramu Valley, from 19 September 1943, and concluded when Allied troops entered Madang on 24 April 1944. During the campaign, Australian forces – supported by Australian and US aircraft – advanced through the Markham and Ramu Valleys during which there were minor clashes with Japanese forces, which withdrew towards their main defensive line in the Finisterre Range. The central geographical and strategic feature of the campaign was the imposing Shaggy Ridge, running north-south in the Finisterres; this was the scene of a climactic battle during which the Australians assaulted the Japanese positions in December 1943 and January 1944. Following the fighting around Shaggy Ridge, the Japanese withdrew towards the northern coast of New Guinea, where they were pursued by Australian and US forces advancing through the Finisterres and along the coast from Saidor. Following the capture of Madang, the Japanese eventually withdrew to Wewak where further fighting took place in 1944 and 1945.

During September 1943, Australian forces from Major General George Vasey's 7th Division, advancing from Nadzab, had captured Lae, as part of a pincer undertaken in conjunction with Major General George Wootten's 9th Division, which had advanced along the coast from the east of Lae. Heavy rain had held up the Australian advance and much of the garrison had managed to withdraw inland, prior to the capture of the town. To follow these forces up, the 9th Division's focus then shifted to the Huon Peninsula, while the 7th Division—following the capture of Kaiapit—advanced from there to Dumpu and Marawasa, to prepare for the Australian advance through the Ramu Valley and into the Finisterre Range, towards Bogadjim near Madang on the northern coast.


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