The New Guinea Campaign was a series of military operations during World War II, primarily fought between the Allied forces and the Japanese Empire from 1942 to 1945. The campaign aimed to secure the island of New Guinea, which was strategically important for controlling supply routes in the Pacific. Key battles included the Battle of Buna-Gona and the Battle of Leyte Gulf. Allied forces, including troops from the United States and Australia, faced challenging terrain and harsh conditions while engaging Japanese forces. The campaign ultimately contributed to the weakening of Japanese positions in the Pacific and paved the way for further Allied advances.