Computers During World War Two: Konrad Zuse
waste.informatik.hu-berlin.de
waste.informatik.hu-berlin.de
We also tend to forget that WWII utterly destroyed the scientifically and industrially most advanced nation at the time: Germany. That must have set us back a few years.
Zuse tried to be sucessful after the war in Germany. In a different environment (for example the US) he might have been more influential. I don't know why he didn't move to the US.
I saw him once when he was old and his ideas were slightly strange.
I should also mention that the linked article paints a very rosy picture about Zuse. In the last years there was some discussion about how much he worked for the Nazi war machine and whether his biography is correct.
Amazing that a fully mechanical machine was able to make calculations based on a programming language.