During World War II the neutral country of Switzerland underwent initially sporadic bombing and aerial combat events that became more frequent during the later stages of the war.

Wauwilermoos was an internment camp and prisoner-of-war penal camp in Switzerland during World War II. It was situated in the municipalities of Wauwil and Egolzwil in the Canton of Lucerne (Luzern). Established in 1940, Wauwilermoos was a penal camp for internees, including Allied soldiers, among them members of the United States Army Air Forces, who were sentenced for attempting to escape from other Swiss camps for interned soldiers, or other criminal offences. Together with Hünenberg and Les Diablerets, Wauwilermoos was one of three Swiss penal camps for internees that were established in Switzerland during World War II. The intolerable conditions were later described by numerous former inmates and by various contemporary reports and studies.