Among the unique scenes in this film, special mention should be made of the following, due to their value as historical documents: the speech of Alvarez del Vayo at the League of Nations, the speech of La Pasionaria in Paris, the defence of Irún and San Sebastián by the Basque militiamen and the battles in the streets of Carabanchel, Casa de Campo, Parque del Oeste and Somosierra. In all of them the heroism of the soldiers of the people reaches levels of unparalleled bravery. Never before have scenes of such realism been shown on the screen as in España 1936, the most authentic and realistic documentary made of this war.
It should be noted that although Buñuel made the film in association with the French Communist Party, the film lacks a lot of the overt biases known for political documentaries at this time. Buñuel chronicled this film in his typical style showcasing the inhumanity, death, and destruction of the Spanish Civil War rather than focusing solely on the political message supporting one side or the other. This notable style of Buñuel stands in contrast to other politically based documentaries at the time including Triumph of the Will, The Man with the Movie Camera, Night Mail, and Battleship Potemkin, among others.