The piece starts about 15 seconds into this trailer, for the war film "The Red and the White"
(WARNING: the video contains some graphic violence; just throwing that out there for any possibly faint of heart, don't wanna offend)
http://www.youtube.com/watch?v=2DzCL4kKb0Q
sounds like Shostakovich? But maybe not. It's driving me mad, heh. Please help, much appreciated.