If David Irving suggested that two and two gave four, I'd be highly inclined to believe the opposite.

But then, you can seldomly trust contemporary official news reports either. On all sides they were coloured with propaganda. In some photos taken before the war (in 1938 or 1939) a picture was used by both sides with exactly opposite purpose. It's quite ridiculous sometimes.

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„Solange man nicht mit dem Kopf unterm Arm rumläuft geht es doch noch!" Erwin Rommel