A few points.
England has been convinced of it's own invincibility before, it never works out. In general it's current attitudes are based on the assumption that the existing alliances and such will hold and that none of those "allies" will be part of whatever threat it faces. European powers also have a tendency to be very focused on their back yard and not want to acknowlege a threat until it's right on their doorstep. We saw this in both World Wars, and the attitudes haven't changed much since then.
The EU as it stands now is mostly an economic arrangement, and overall a massive joke. The way France freaked and almost pulled out of the EU over the threat that other Europeans might come to live in France and demand the rights of French citizens was very telling, and almost classicly French.
Germany in paticular is a group that (even if nobody agrees with me) I feel should not be trusted under any circumstances. "The Germans are our friends" is not anything that anyone should rely on.
As far as invasion goes, the entire EU is at the moment more or less at the military mercy of the US, China, and Russia. The US's military seems like a "joke" because of our police actions and the fact that we haven't fought any serious wars since World War II. All of our objectives have been about winning a peace, rather than simply running in to level everything and remove a threat. China and Russia have the manpower to literally swamp anyone out there, including the US if it wasn't for these big huge oceans (and everyone else) between us and them.
I'm sure Europeans (and others) will disagree, but that is more or less how it is. For all of their nuclear power (so to speak), Russia just kicked the EU's can not too long ago by shutting off the fuel, and invading Georgia which was right on it's border, with no signifigant retaliation. What's more, I'm not sure if the EU combined has a stockpile capable of doing much to Russia or China. Sure it might get a few cities, but we're not talking the US that has an arsenal capable of wiping out the world 10x over. It comes down to the "nuclear Iran" Vs. Isreal arguement. One of the reasons why it's a possibility is that fanatics can wipe out Isreal with a nuclear spread, but Isreal's retaliation is only likely to be a drop in the bucket of the Arab/Muslim community. Even if they wipe out Iran, how many Muslims would still be out there? Yet on the other hand Jews would be forced to near non-existance. The same basic arguement applies to things as massive as Russia or China. Nations like France simply cannot do enough damage to do more than slow them down despite what they might say.
In the end it also comes down to how many boots can be put on the ground, and again it comes to manpower. Either Russia or China vastly outnumber any defensive forces, and due to a certain president dropping the ball China has managed to knockoff a lot of US technology to make things like their new Yuan Class submarines. The tech advantage might not exactly be in Europe's favor.
Don't get me wrong, I'm not saying the EU isn't a power. It's just not yet a superpower, as the new kids on the block they really can't play with the big boys.
I also personally think that in the face of a serious threat the EU is likely to fragment. What's more England is most likely to be facing invasion BY it's neighbors. It's doubtful that Germany will directly build up a huge war machine again, BUT their economic actions and such might lead to them effectively building an empire that way and effectively controlling certain nations in the region and their military as puppets.
I look back at France for example, despite all the comments about the vaunted "French Resistance" Germany simply didn't have the boots to occupy and control France. US actions sort of demonstrate how difficult that is. Like it or not France was a nation of Nazi collaberators no matter how much they try and deny it. Convince them they have an advantage and can pull it off, and France will jump on anyone around them. The French want nothing more than to have an empire (and be truely relevent) again.
But basically the US couldn't invade but we could level the EU. We probably have enough anti-missle technology via submarines and planes with some of the newer syustems to stop the EU nuclear stockpile (which is sizable, but not as much as people might think). We could pretty much kill nearly everyone and leave few structures standing, and there wouldn't be many people to shoot back at while we did it.
Russia or China could basically "Zerg" the EU, absorbing the nuclear hits and pretty much overrunning the entire place with sheer numbers. The numer of tanks Russia has is frightening, as is the raw manpower China can produce, especially combined with some of
their recent military improvements.
If it's just england... well... England is a power, but it's pretty much dead. All the British arrogance in the world can't deal with some of these realities. England is mostly a factor when it backs a bigger power like the US. Great support, but not really running point anymore.
As far as Hitler and his Russian campaign, the problem was that he was fighting on too many fronts. He was also not driven by logic (the guy was seriously into the Occult as many of you might have heard). Had Hitler waited we'd all be speaking German right now. Don't misunderstand, "we" came VERY, VERY close to losing that war.
Had Hitler been able to focus the full might of his military on Russia, he would have wiped it out, Russian Winter non-withstanding. Simply put the Russians only won because the Nazis were spread too thin and were able to cut the supply lines as the offensive forces moved in too deeply. Had Hitler waited he could have held off the Russians, focused on other fronts, and then brought everything up against them. In that case we know bloody well retrospectively he would have won. He overextended and pretty much lost on all fronts, a lot of his super weapons were not developed as a result (people have talked about some of the crud he had in development) and he wound up on the defensive, and pulling out the fanatical citizens in the "Volkssturm" in a last ditch defense to turn back the allies, which failed and lead to the death of the majority of his supporters who threw themselves at the allies, and/or were rounded up and executed en-masse down to the children and elderly.
>>>----Therumancer--->