I ran across an interesting item today reading about FDR. And that is how very minor details, can have an outsized impact on events. The case in point, FDR and Churchill were having a summit meeting in Casablanc, 1942. The fear was that Germany would find out about it. Germany did find out, but when the information got to Hitler, someone had translated Casablanca, to white house. Resulting in Hitler thinking the meeting was in Washinton DC. That got me thinking this kind of mistake could make a good plot element.