The Battle of Anzio was a battle of the Italian Campaign of World War II that took place from January 22, 1944. The battle began with the Allied amphibious landing known as Operation Shingle, and ended on June 4, 1944 with the liberation of Rome. The operation was opposed by German and by Italian Repubblica Sociale Italiana (RSI) forces in the area of Anzio and Nettuno.

Nettuno is a town and comune of the Metropolitan City of Rome in the Lazio region of central Italy, 60 kilometres south of Rome. A resort city and agricultural center on the Tyrrhenian Sea, it has a population of approximately 50,000.