Royal Air Forces Escaping Society

The Royal Air Forces Escaping Society, was a UK-based charitable organization formed in 1946 to provide help to those in the former occupied countries in World War II who put their lives at risk to assist and save members of the "Royal Air Forces" (that is, Air Forces of the British Commonwealth) who were attempting to escape and evade capture. The society was based at the Duke of York's Headquarters, London and had the Latin motto Solvitur ambulando (solved by walking).

Source: Wikipedia — Royal Air Forces Escaping Society (CC BY-SA 4.0)