One unassuming bullet point also mentioned the fact that U-99’s crew had been searched and, among their possessions, an illustration of the point-blank tactics pioneered by Kretschmer had been found. The importance of the document apparently evaded those who read the report. The revelation was neither noted nor communicated to the escort commanders. The three aces were gone, but their pioneering tactic remained in play. Roberts, when he arrived in Liverpool, would have to discover it for himself.

