In order to replicate this, you need to invade countries and conquer them to test out your equipment, soldiers discipline and whatnot.
I don't see EU countries starting to invade other countries around the globe to test out weapons systems and battlefield tactics. The US on the other hand, kind of did this continuously since WWW2 (to mention recent history).
There's no reason this can't be replicated by other rich nations but it won't be cheap or quick.