I was doing some reading this afternoon about all of the international soldiers who left their homes, from places in Europe and the Americas to help the Spanish people against fascism.

Interestingly enough, Canadians and Americans were investigated by the FBI and Mountie Police for their war collaboration, and in both nations those who were involved weren't allowed to serve their nations in WW2 which followed a few years later. This seems odd to me, because those international soldiers left their homes to fight fascism, and then they were barred from doing so in actual war a few years later. This confuses me.