Well I guess that's one way of telling us the entire cast of Dad's Army is dead.
Which is perhaps the most depressing thing that's happened in the war so far, and that's saying something.
...well, that depends on whether you believe Whig history or not. And who you consider foreign invaders. If we're talkin' 'not english' which seems to be the general idea, then England got invaded all the time. It just rarely worked and England always ended up back on top. The Normans ended up becoming English, the later Plantagenet and Tudors invaded (arguably, especially in the latter's case) and won multiple times but England ended up being their most important dominion. Then we get to the war of the three kingdoms where Irish and Scottish armies were fighting and helping English ones, and the Glorious Revolution was basically the same thing, only with added Dutch. Then there's the Jacobite rebellions, the Napoleonic invasion (it was small, rubbish and over quickly but still an invading force successfully landing) and so on.
Still if the Soviets want to re-write history, the British did it first I guess.