Considering the state of the Europe at that time it could lead to another conflict easily. "We want to repeat etc", "soviets might not be that bad" etc. We saw what happened in Yugoslavia later when the common enemy (USSR) disappeared. Tensions like that are everywhere in Europe. A lot of folks just do not understand that Europe is very diverse with almost every chunk of land having its own history. It has reached a point now even that if EU had tanks, it would send them to Hungary and others. They often tend to think that EU is just like USA. Without USA EU would have trouble to be unified - just too many countries that speak completely different languages - sometimes even within the same country they have groups that they cannot understand at all. Even within EU the northerners do not like feeding southerners, and a lot of Germans do not like that Germany has been a piggy bank for other states (like bailing out Greece) and so on. And that's without various historic issues.
Poland still has some issues with Germany, Spain and Portugal do not like the frugality of Germany and Italy does not want to fight for Germany or France. Even with sending the troops - how many of the countries are willing to send their soldiers to fight for country X while the country Y won't send anything? "Die for Germany, polish guy!" And so on. Europe is a huge mess, historically huge mess. It has never been truly unified and often fell apart with the same borders. Only military might maintained some unity from time to time - but by and large the base lines - germanic world, France, Italy, Balkans, Iberia - the dynamics have not changed.