The 180 degree flip of wartime penicillin : from secret weapon of war to public weapon of propaganda

War is not at all like the playing fields of Eton , many reports to the contrary.

Both sides get advance notice of the time, place and nature of the activity in sports - and there is a strictly enforced set of rules.

By contrast, a successful military offensive operation is far more than half won if it is kept secret to the last moment and beyond.