The Swiss Air Force is the air component of the Swiss Armed Forces, established on 31 July 1914, three days after the outbreak of World War I, as a part of the army and in October 1936 as an independent service.
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.
Letter from OSS director William J. Donovan regarding bombings of Swiss towns.