The Nassau Bay landing secured a supply beachhead for Allied operations against Salamaua, shortening overland supply lines during the New Guinea campaign.
Key Facts
- Operation dates
- 30 June – 6 July 1943
- Landing force size
- Battalion-sized US infantry with supporting elements
- Total battalions landed
- 3 US infantry battalions landed by early July
- Equipment loss
- Most US landing craft wrecked in heavy seas
- Opposition at landing
- Largely unopposed initial landing
Location
Cause → Event → Consequence
Allied forces required a forward supply point on the south-eastern flank of the Salamaua battle zone to shorten their overland supply lines. Existing logistics were insufficient to sustain the planned offensive against Salamaua as part of the broader Salamaua–Lae campaign, necessitating an amphibious operation to establish a new beachhead.
Between 30 June and 6 July 1943, Allied forces conducted an amphibious landing at Nassau Bay on the coast of New Guinea. Despite severe weather that wrecked most US landing craft, troops secured a lodgement largely unopposed. Australian forces marked beaches and conducted diversionary attacks against nearby Japanese positions to support the operation.
The established beachhead was exploited by landing two additional US infantry battalions along with Australian and US artillery in early July. These forces advanced north in a flanking drive on Salamaua in conjunction with Australian attacks from the west, helping to draw Japanese reinforcements away from Lae over the following months.
Belligerents & Mobilization Analysis
Side A
2 belligerents
Side B
1 belligerent