Far from being a negative account of the evacuation at Dunkirk of B.E.F forces, it used facts and figures to detail the heroism of the British, French, and Belgian military involved.
Hampered by inability to communicate efficiently with their French counterparts, it is an amazing tale of how the ultimate tragedy was snatched from history to reflect dogged determination, skillful seamanship, ability to change procedure at a moments notice.
The author also details weakness on Germany's behalf to indicate that they were not superhuman: they exhausted themselves, made errors in tactics, misconstrued intercepted messages etc. He outlines several points of Blitzkrieg that I had not been aware of previously as well as the contrast of it with traditional military doctrine of the day.
I would consider this an objective report of what happened during this time and the reasoning for doctoring/censoring what was happening as perceived by the Britons themselves.
A good read!