James Robinson writes:

In rereading his post, I think he's talking about the effect on
scientific development, not the impact on the military. Much of Europe's
infrastructure was destroyed in the wars, so they tended to concentrate
on rebuilding the infrastructure economy, rather than putting money into
R&D.

A lot of infrastructure was destroyed. Additionally, any non-military
research came to a halt, and never really got started again after the
war. There was also a brain drain from Europe, aggravated by Nazi
persecution of Jews, because many of the leading scientists in Europe
were Jewish (and thus were inclined to leave, or were prevented from
doing anything useful by the Nazis).

All in all, the Europeans blew it. They had their playground fights,
and the price they paid--beyond the hundred million people dead--was a
permanent window seat in the developed world.

The US had perhaps 10,000 civilian fatalities.

In the CONUS and Hawaii? Where?

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