I have passed thought German airports many times on the way to Russia. I have been there to visit 3 day the summer of 1999 on my way back from Belarus. In 1997 I was two days in Gdansk Poland where I was able to use my German to get a room.

2.5.9.0 German History - Wikipedia
2.5.9.1 Germany - Wikipedia
2.5.9.2 My German Stepfather Who Joined US Army In WWII
2.5.9.3 Otto The Great
2.5.9.4 Teutonic Knights
2.5.9.5 Adolf Hitler
             2.5.9.5.1 From Living Under Hitler - Kitty Werthmann
2.5.9.6 Mein Kampf - overview
             2.5.9.6.1 Mein Kampf by Adolf Hitler - Table of Contents
2.5.9.7 Frank Odel - Buchenwaldt
2.5.9.8 The Witch of Buchenwaldt
2.5.9.9 Former Nazi guard Demjanjuk dies