Textbook McDougal Litell "The Americans. Reconstruction to the 21st Century" version 2003, page 539, chapter 16, section 2: "The blitzkrieg tactics worked perfectly. Major fighting was over in three weeks, long before France, Britain, and their allies could mount a defense. In the last week of fighting, the Soviet Union attacked Poland from the east, grabbing some territory."
Ok. Why am I quoting this? Because I would like to clarify something:
