V1s and V2s were rocket-propelled bombs, basically, developed by Werner von Braun at Peenemunde and deployed as a more or less last ditch terror effort at England in '44. In later years, after von Braun was the darling of the American space rocket program and had been rehabilitated as a former Nazi scientist, he released a memoir called "I Aim for the Stars" to which some wag appended the qualifier "but sometimes I hit London."

The evacuation of Dunkirk was more or less a miracle, as Willis describes it--the evacuation of so many thousands of British soldiers from the tip of France after a failed expeditionary mission. Here's a link to the Wikipedia article--a good quickie overview:
http://en.wikipedia.org/wiki/Dunkirk_evacuationAnd don't forget, "Polly" is a form of the name Mary. That's why Polly's so worried about getting out--she'll create a paradox if she's still there when "Mary" is supposed to arrive, and Bad Things will happen. And she's keeping mum about it because she doesn't think Mike and Eileen can handle one more problem piled onto their already fragile emotional states. At least that's I figure.
Speaking of fragile emotional states...I wonder how much Willis wants to contrast their panic with the stolidity and bravery of Londoners watching their own world disintegrate...?
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possible spoiler alert
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I really get the feeling that a lot of the story is going to come together in the next book, and seemingly unimportant details will suddenly make sense and become important. For example, the jacket text mentions spies--I'm sure the young man Mike meets in Orpington, Hugh Tensing, will turn out to be a German spy. What effect will he have on everything? And what about some of the other characters? I'm willing to bet the Hodbins will figure in All Clear--their departure was too abrupt. And something about the play Polly and the others are putting on--I haven't read The Admirable Crichton so don't know if there's a tie-in here...but she's built that part up too much not to do something with it.
I do agree that the miscommunications issue gets a little problematic. Why doesn't anyone have a cellphone, for one thing? I can't help wondering if in her own life Willis doesn't use one (I own one, but it lives in my purse and is rarely used, so if I wrote contemporary I might forget about them). I also agree that their ignorance is a little odd,--not so much for the tiny details about what buildings get bombed when, but you'd think they'd know more broadly about what regions of England were getting hit at any given time. I wonder if that issue is intentional and it turns out there was a reason they were ignorant...?
Also speaking as a writer, I have to say that I'm pretty disgusted by readers on Amazon giving this one star because they're cheesed off that it ends on a cliff-hanger, even if they enjoyed the book.
