Still, the work was exhilarating, especially when the first fruits of WATU’s work began to be seen in summer 1942, when escort ships sank four times as many U-boats as the previous month,11 beginning an upward trend that would continue, broadly, for the rest of the year. The improvements in tactics were timely as they helped compensate for the fallout from an internal battle being waged between the navy and air force in London. The major source of contention between the Admiralty and the Air Ministry related to the deployment of long-range bombers. In Captain Walker’s battle of HG.76 in
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