Indeed that link points to an unrelated old document referring to the 1999 edition.
When on the AH-site better visit this place for the latest rules and FAQ:
https://avalonhill.wizards.com/rules
You will find the correct link to the 1940 2nd ed. FAQ there:
http://media.wizards.com/2015/downloads/ah/aaeurope1940_2ndedition_faq.pdf
(Still not the latest version, that should be of November 2014, but you can go with it.)