National governments don’t give a fuck about their own armies until they need them. Ironically, most CIS countries needed their armies to defend against Russia.

EU countries can not wage wars against one other, armies or not, as everyone knows that the whole bloc’s economy would crash instantly as soon as we stopped trading. If German tanks rolled across France again, their crews would starve, as would the French defenders before they could kill each other.

The only reasonable use for an army in modern Europe beyond imperialistic outings with the US to countries who deserve better is to defend against Russia (and maybe China).