Days before Hitler invaded Poland, the USSR and Japan fought a massive tank battle on the Mongolian Steppe. The battle shaped the course of WWII, but few have ever heard of it. Why?

http://www.siberianlight.net/2008/01/21/khalkhin-gol-battle-nomonhan/

Interesting part of history, maybe it was considered back then a little border skirmish and then it got forgotten. There are some parts of history that we just step over, sometimes for no good reasons...

It was brought up before, in the greatest(or most decisive?) Battle of WWII thread.