Seeking ID of strange "cheese grater" device on below cockpit window of some 1940 He111s

[George Hopp]

Since most flare storage was normally armoured, this might have been another take on the problem. Since there was little or no armour on fighters and bombers in 1939 through much of 1940, placing the flares in an external storage area would enable them to be easily jettisoned in case the aircraft was intercepted.