F-2 Imperial German Flags and Standards by Martin Lezius IGP Poster Flags and Standards of the Imperial German Guard Units by Lezius (Poster) R-10 Ruhl's Army of Austria C. 1890 R-12 Ruhl's Russian Army C. 1888 R-13 Ruhl's Army of Imperial Japan C. 1896 R-21 Ruhl's U.S. Army 1882-1903 R-25 Ruhl's Army of Spain 1892 R-28 Ruhl's Army of Italy 1892-1898