The Battle of Balikpapan was a significant military engagement during World War II, occurring from July 1 to July 21, 1945. It involved Allied forces, primarily from the United States and Australia, launching an amphibious assault on the Japanese-held city of Balikpapan in Borneo, Indonesia. The battle aimed to secure the area for its strategic oil resources. The operation was marked by intense fighting, with Allied troops facing strong Japanese defenses. Ultimately, the Allies succeeded in capturing Balikpapan, which contributed to the overall campaign in the Pacific and helped secure vital resources for the Allied war effort.