Dmitry Stakhievich Moor
From The Giant: The Definitive Obey Giant Site
Dmitry Stakhievich Moor (1883-1946) was a very prolific poster designer and satirical artist. Contributor to Pravda, Izvestija, and satirical magazines such as Krokodil. Known for his ability to combine humor and satire with monumental compositions. Teacher at Vchutemas, 1922-1930. More of Moor's work can be seen here: [1].
"Have You Volunteered" is a two-color lithograph, 70x106 cm, that served as a 1920's Russian propaganda poster. "Have You Volunteered" is noteworthy, as it served as the template for Shepard Fairey's 1997 work Join the Posse.