‘In the event of unforeseen parachute release, proceed with extreme caution. Remember your training. Establish and confirm your exact location as far as possible. Remove all identifying insignia from clothing, destroy all incriminating documents, and avoid unnecessary civilian contact. If in a group and challenged by parties unknown, allow your superior or the most confident member of your company (French- or German-speaking) to speak on your behalf. If suspicion is not aroused on first contact and subsequently, do not become over-familiar with locals. Your position will remain at all times precarious. Expression of political opinions is strongly discouraged. If in need of shelter or a hiding place, outbuildings and gardens are especially recommended.’ (Parachute Operations: Training and Preparedness, RAF, 1940)