In this interpretation, the RAF's strongest concentration on heavy bombers came later in the 1930s. Radar then strengthened the case for fighters by making interception more practicable. The resulting burst of fighter development forms part of the explanation for late changes in procurement priorities. The Royal Navy's planned fighter capability also belonged to a fleet expected to mature in 1942. War in 1939 brought a different force into action.
Notable Point · 2:15:01-2:16:16
Radar changed the case for fighter development
The late-interwar shift toward fighters is connected to radar, while the fleet planned for 1942 differed from the force available in 1939.