Balikpapan's value was measured in barrels. Before the war, its refineries on Borneo's east coast produced 1.8 million tons of oil products a year, fed by fields around Sambodja and Sangasanga to the northeast. When the Japanese seized the town on January 25, 1942, Dutch defenders destroyed what infrastructure they could before being overwhelmed. The Japanese retaliated by massacring 78 Dutch civilians and prisoners of war on February 24, 1942. They repaired the refineries and by 1943, the port was delivering 3.9 million barrels of fuel oil to the Japanese war machine. Allied bombers flew seventeen-hour round trips from Darwin to attack it. RAAF Catalina flying boats seeded the approaches with mines, cutting output by an estimated forty percent. By late 1944, sustained American bombing raids had wrecked the refineries so thoroughly that Japan stopped sending tankers altogether. The oil that had made Balikpapan worth conquering was, by the time anyone planned to reconquer it, barely flowing.

General Douglas MacArthur had originally envisioned Balikpapan as a stepping stone to retaking Java. When that operation was cancelled and the Netherlands East Indies transferred to British command, the strategic rationale evaporated. The commander of the Australian Military Forces, General Thomas Blamey, recommended against the landing, arguing it served no purpose. The U.S. Joint Chiefs shared his doubts. MacArthur pushed the operation through anyway -- historian Garth Pratten concludes he manipulated both the Australian government and the Joint Chiefs into approving it. The stated objective was to secure the port and oilfields and establish a base for future operations. But the future operations never came. The war was five weeks from its atomic conclusion, though no one at Morotai Island, where planning teams gathered in late April 1945, could have known that. What they did know was that shipping was short, coordination was poor, and the tactical planning had a rushed, improvised quality that troubled the experienced officers of the 7th Division.

If the beach landing was almost bloodless, the terrain behind it was not. The 18th Brigade pushed inland toward the high ground north of Klandasan, where Japanese defenders from the 2nd Garrison Force had dug into a complex of pillboxes, tunnels, and minefields along a feature the Australians dubbed Parramatta Ridge. Lieutenant Colonel Tom Daly's 2/10th Battalion launched the assault on Hill 87 without its promised fire support -- a last-minute diversion and communications failures left the infantry advancing alone. Japanese resistance stiffened through the morning, pinning the Australians below the summit. Just before noon, two Matilda tanks from the 1st Armoured Regiment clanked forward, their guns suppressing the defensive positions long enough for the infantry to storm the crest. By 12:40 pm, Hill 87 was in Australian hands. The fighting continued for days afterward as engineers methodically destroyed tunnels and cleared thousands of mines and booby traps. Along the Milford Highway, the 25th Brigade spent a fortnight working to encircle a Japanese defensive position at Batuchampar, ten miles from the beaches, where the surviving defenders withdrew in good order -- their discipline and fieldcraft earning grudging respect from the Australians pursuing them.

Major operations ceased around July 21, when the Japanese abandoned Batuchampar. Small clashes continued until mid-August, when Japan's surrender found Australian patrols still combing the jungle for stragglers. The 7th Division lost 229 killed and 634 wounded -- light by the standards of their earlier campaigns in the Middle East and New Guinea, but each casualty sharpened the question that historians have debated since. The airfields at Sepinggang and Manggar, captured in the first week, could not support bombing operations. The port and oil facilities had been wrecked by the very bombardment meant to enable their capture, straining relations with the returning Dutch colonial administration. The oilfields that fed the refineries remained in Japanese hands until the armistice. Historian David Horner concluded the operation was undertaken largely for political reasons, as MacArthur wished to show the Dutch he had tried to recover their territory. Peter Dennis called it "doubtful value strategically" but "tactically skilfully conducted." The Australians who fought it would have appreciated the distinction.

Today a memorial stands in a traffic roundabout in Balikpapan, near Merdeka Square and the Pertamina oil complex. Known locally as Tugu Australia -- the Australian Monument -- it has existed since at least January 1946, when the last of the three Australian brigades completed occupation duties and departed. A copper inscription sculpted by Ross J. Bastian was added in 1998, detailing the battle for visitors who pass by on their way to work in what is now the capital province of East Kalimantan. The refineries were rebuilt. The oil flows again. The 7th Division's soldiers went home to Queensland and lives interrupted by a war that ended, in the end, without needing them to take this particular beach. But they took it anyway, and 229 of them did not come back.