Key Facts
- Duration
- July–November 1942 (plus Buna–Gona to Jan 1943)
- Japanese landing date
- 21 July 1942, near Gona and Buna
- Japanese furthest advance
- Within sight of Port Moresby before withdrawal
- Japanese withdrawal date
- 26 September 1942
- Kokoda recaptured
- Unopposed, after Battle of Oivi–Gorari (4–11 Nov 1942)
Strategic Narrative Overview
Japanese forces rapidly overran lightly held Australian and Papuan positions, capturing the vital Kokoda airfield on 29 July. Despite reinforcement with veteran AIF brigades, Australian units were steadily pushed back. The Japanese reached Ioribaiwa in mid-September, nearly within sight of Port Moresby, before being halted. Overstretched supply lines and reverses at Guadalcanal forced a Japanese withdrawal on 26 September, after which Australian forces pursued, fighting through strong defensive positions at Templeton's Crossing and Eora Village.
01 / The Origins
Japan sought to isolate Australia from the United States by capturing Port Moresby, a key Allied base in the South West Pacific. Unable to take it by sea after the Battle of the Coral Sea, Japanese planners ordered an overland advance through the rugged Owen Stanley Range via the Kokoda Track, beginning with amphibious landings near Gona and Buna on 21 July 1942, bringing the threat directly to Australian-administered Papua.
03 / The Outcome
Following the unopposed recapture of Kokoda, Australian forces decisively defeated Japanese units at Oivi–Gorari in November 1942. Two brigades of the 7th Division crossed the Kumusi River and joined a joint Allied operation against the Buna–Gona beachheads, which fell on 22 January 1943. The campaign exposed severe Australian doctrinal and logistical shortcomings in jungle warfare, prompting widespread reforms in training, equipment, and military structure.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Major General Tomitarō Horii.
Side B
3 belligerents
General Douglas MacArthur, General Sir Thomas Blamey, Brigadier Kenneth Eather.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.