The Spanish Civil War remains as one of the longest and bloodiest conflicts involving a major country, and it's impossible to sum up its many nuances. You'll get one view of the conflict here with incredible footage of war and glimpses of rural Spanish life.
This, however, isn't a documentary as much as it is straight Soviet-style propaganda. The style of the film, from the poor farmers bettering themselves with a homemade concrete irrigation system to the election of soldiers to hear impassioned political pep talks from movement leaders, s straight from the Stalnist manual of Lifestyles of the Glorious Peoples. This isn't meant to Red-bait any of the participants -- they truly believed in a "free" Spain, and fascist-backed Francisco Franco's regime wasn't the answer, either -- but the reality was far different and is only now coming to light after 70 years.
The Spanish Civil War was also very much a fascist/Soviet proxy war, and the Soviet Union had a not-so-hidden hand in its direction. Look carefully at the fighting sequences, and you'll see very atypical people in different-style uniforms guiding artillery and directing troops.
As a historical insight -- despite what now appears to be a ham-fisted approach in propaganda -- the film is priceless. And many thanks for TCM and its ever-expanding programming efforts in broadcasting the film in July 2007; hopefully, we'll always have somebody unwilling to slice, dice and crop something and still call it a classic, ala AMC.