On 3 September 1917, Hutier, commanding the Eighth Army, ended the two-year siege of the Russian city of Riga. He moved his troops to an unexpected sector in the Russian lines, and using a heavy bombardment prepared by Georg Bruchmüller and a surprise crossing of the Dvina River, took the city. The tactics he employed—surprise and encirclement—were essentially standard German Army doctrine; his infantry attacked in company-strength skirmish lines after crossing the River Dvina, much as they would have done in 1914. He followed this success with Operation Albion, an amphibious assault (the only successful one of the war) that seized Russian-held islands in the Baltic Sea. Hutier was awarded the Pour le Mérite by Kaiser Wilhelm II for seizing Riga. His success there also impressed General Erich Ludendorff, who transferred Hutier to the Western Front in 1918.