ABSTRACT
‘The success of Home Defence is the result of interception, whatever the means employed to secure this object. Thus if we always maintain our fighter equipment superior to that of the enemy bomber, in flying performance and in hitting power, we shall be able to inflict such casualties on him that he will lose his morale. His pilots will tend to drop their bombs anywhere rather than seek their way through to the vital objectives. While 100% interception must be our first aim, a lesser percentage, if combined with heavy casualties to raids intercepted, will achieve air ascendancy. On the other hand if our fighters are not superior to the enemy bombers, the most perfect system of intelligence and interception will fail, and so would the air defence of the country against air attack. The sole purpose of the interception system is to concentrate in time and place, and to achieve local air superiority by the most economical method.’
