Dude you not only have zero knowledge of special ops you have knowledge in the negative numbers. Do you think we would roll tanks up into Germany and just roll down the street and have an observable battle.
We have army bases in Germany already and it would the spec-op to go in dressed incognito and access the personnel by surprise. The only public thing that might be seen would be if the fight started outside. They already had notified friendlys in the German govt. Communications would have been cut off the very second they started their breach along with diversion/confusiion methods.
You reasons are totally invalid.