The Attack of the Dead Men, or the Battle of Osowiec Fortress, was a battle of World War I that took place at Osowiec Fortress, on August 6, 1915. The incident got its name from the bloodied, zombie-like appearance of the Russian combatants after they were bombarded with a mixture of poison gases, chlorine and bromine by the Germans. While coughing up blood, the Russians covered their faces with cloths and managed to rout German forces.

Władysław Strzemiński was a Polish painter, art theoretician and pedagogue. He is regarded as a pioneer of Constructivist avant-garde of the 1920s and 1930s and the developer of the theory of unism.