The "Talvisota" is the war fought by Finland against USSR during winter 1939-1940. The conflict ended, logically, by a Soviet victory but still stands as a Finnish victory thanks to the brilliant resistance offered.
The movie "Talvisota" follows a group of Finnish reservists from the same region, including two brothers, from the pre-war mobilization on through the journey to the line and the terrifying battles on the border. Made in 1989, at a time when the USSR wasn't any more the threat it was from the 1940' on, it's not a nationalist film but a truly honest reenactment of 1939-1940 Finland with ordinary men responding to their country call to arms. The fact "Talvisota" was made with only finnish actors, unknown for anybody outside Finland, helps. "Talvisota" shows no special mission or decisive raid but the dangerous life of simple soldiers, from one spot to another.
It's an astonishing movie from the historical point of view. The massive Russian attacks are quite impressive, with real Soviet T-26 light tanks.
The movie is a long one - more than 3 hours - but is truly fascinating.