Invasion of Poland in 1939 by German Army, 1943

This video is about German Invasion of Poland. It explained some of the plaining and operation of the invasion. Apparently, the footage come persuasively from German sources because I see no Polish Military footage. This video is in the Public Domain. The Master Copy can be found at the National Archives and Records Administration, Room 4000, 8601 Adelphi Road, Hyattsville, MD 20740-6001. The Archival Retrieval Catalog (ARC) number is: 24457