A great little book by Phil Mason taking on so well worn historical myths.
Some of my faves are:
The Vikings were mainly peaceful settlers not sacking monasteries
Far from being desolate - Hadrian's wall was surrounded by settlements and farms
Breaking the enigma code wasn't entirely positive as suing too much information would have given away the fact it had been broken and even when info was passed on commanders weren't told where information came from and couldn't trust it.
The constitution of the USA wasn't easily agreed by wise men but cobbled together, especially the amendments and the wild west wasn't very wild.