The Red Army is the defense of the proletarian revolution. Poster Number: PP 1000 Category: Revolution Poster Notes: [On flag]: "23 February 1919." The date signifies the second anniversary of the February Revolution, the cataclysmic event prior to the October Revolution of 1917; at the lower left is the hammer and plough symbol for the Red Army. This was a symbol approved on April 19, 1918 and it was replaced by the hammer and sickle in August 1918. Media Size: 38.5x27 Poster Type: Lithograph Publishing Date: 1919 Sources & Citation: Soviet Posters of the era of the Civil War 1918-1921 by B.S. Butnik-Siverskii (1960), page 267, poster 1240. Stites, R. (1991). Revolutionary dreams: Utopian vision and experimental life in the Russian Revolution. New York: Oxford University Press. (hammer and plough symbol) Catalog Notes: PP 1000 Revolution b