That seems like an odd use of the word "invade". I mean, your definition is implicit, but I'm not sure it's quite standard. If I search the internet for, say,

That seems like an odd use of the word "invade". I mean, your definition is implicit, but I'm not sure it's quite standard. If I search the internet for, say, "soviet invasion of germany" I get almost entirely hits such as plans for invading West Germany for WWIII, or alternate histories where the Soviets invaded Germany at the beginning of WWII instead of signing a pact. Also the German invasion of the Soviet Union. It's not entirely unheard of to refer to Soviet offensive into Germany at the end of WWII as the "invasion of Germany", but it seems to be somewhat rare and unusual. And with Bing, unlike Google, I didn't find that usage at all. I wonder if people rarely use the phrase because it seems vaguely to imply sympathy with the Nazis.