7. On the other hand our offensive must have taken immediate effect on German plans by making production prospects both more adverse and largely incalculable at the very time when an unexpectedly high rate of military wastage had to be made good, and thus increasingly limiting German strategy. 8. Our bombing offensive has been a major factor in forcing Germany to adopt a defensive air strategy. It has forced the Germans to make a special effort to increase the production of fighter types and it has tied down fighter units on the Western Front in spite of a vital need for them elsewhere.