6. The German Air Command are pursuing a policy of conserving effort wherever possible. Air forces disposed against the United Kingdom are strictly limited in number and are performing an essentially defensive role. They are unlikely to risk the losses involved in covering an airborne or seaborne raid or their withdrawal. The Germans cannot in the forseeable future spare air forces from other theatres of war substantially to reinforce those already disposed on the Western front. 7. The extensive employment of transport aircraft and gliders and the use of parachute troops on the ground in Russia and Africa, preclude any possibility in the foreseeable future of large scale raids against the United Kingdom.