I just saw this film and was blown away by its realism and its heart.  “Land and Freedom” (1995) is roughly based on George Orwell’s experience as a volunteer in the Spanish Revolution / Civil War of 1936 – 1939, which he journaled in his fantastic book Homage to Catalonia.

David is a British radical who goes to Spain to fight the Fascists, and discovers the reality of revolution, counter-revolution, and love.  The film does an excellent job portraying the political debates, struggles and betrayals between the various factions (Fascist, Communist, Anti-Stalinist Marxists, and Anarchists). The entire film is available in one video on youtube (109 min). It is directed by Ken Loach, and is in English and Spanish. Highly recommended!