I spent last week in the eastern Pyrenees, in the Spanish side, near Andorra.
I found in one of the villages, near the border with France had some bunkers, made by the dictator Franco, after the Spanish Civil War. They are still in good condition and you can visit them with a local guide.
So, this means that Franco was afraid of an allied invasion, but how come it never came?
With all due respect to my learned colleague below, this is one 'Why didn't X do Y' question we can actually answer pretty well, and by 'we' I mean u/kieslowskifan.
Hey there,
Just to let you know, your question is fine, and we're letting it stand. However, you should be aware that questions framed as 'Why didn't X do Y' relatively often don't get an answer that meets our standards (in our experience as moderators). There are a few reasons for this. Firstly, it often can be difficult to prove the counterfactual: historians know much more about what happened than what might have happened. Secondly, 'why didn't X do Y' questions are sometimes phrased in an ahistorical way. It's worth remembering that people in the past couldn't see into the future, and they generally didn't have all the information we now have about their situations; things that look obvious now didn't necessarily look that way at the time.
If you end up not getting a response after a day or two, consider asking a new question focusing instead on why what happened did happen (rather than why what didn't happen didn't happen) - this kind of question is more likely to get a response in our experience. Hope this helps!