I have not heard of this film before.
As you can imagine, not many Soviet era or Russian films are shown in the U.S.; however, there usually are 1-2 Arts cinemas in most major cities that show foreign and independent (non-Hollywood) films and documentaries.
College campuses also show a lot of foreign films, although in recent years college cinema groups have had their funding cut.
Most of the Soviet era films I saw were in college; I saw a lot of the old Sergei Eisenstein films (Alexander Nevsky; Battleship Potemkin), and the first two parts of a three film trilogy about the life of the writer Maxim Gorky by another film director.
Unfortunately, I missed the last part (well, I'll never be able to see that film again).
I also managed to see a few on video tape: Eisenstein's Ivan The Terrible; a few films by the director of the films Andrei Rublev and Stalker.
The only Soviet WWII war film I saw was a well-known one, I think it was made soon after WWII, about a Soviet soldier who went home on leave (I, however, forget the name).
I also saw the very end of another Soviet era movie which was included in part of a documentary about Russia which showed Stalin celebrating with the troops after Berlin fell. It was in color, but it looked like an old film.
Thanks for sharing the film.