The image below, excerpted from a poster produced in late 1914, uses the image of Russia as St. George slaying a three-headed dragon to depict Russia's heroic struggle against Germany. Note the skulls lying on the ground under the dragon as well as the pointed helmet associated with Prussian military forces.
M. Petrov', "Rossiia - za pravdy," 1914. Chromolithograph. Reproduction No. LC-USZC4-5025, Library of Congress Prints and Photographs Division, Washington, D.C. http://hdl.loc.gov/loc.pnp/cph.3g05025.