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In page Paul von Hindenburg:

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OHL moved west to the pleasant spa town of Bad Kreuznach in southwest Germany, which was on a main rail line. The Kaiser's quarters were in the spa building, staff offices were in the orange court, and the others lived in the hotel buildings. In February a third Army Group was formed on the Western Front to cover the front in Alsace-Lorraine, commanded by Archduke Albrecht of Württemberg. Some effective divisions from the east were exchanged for less competent divisions from the west. Since their disasters of the previous year, the Russian infantry had shown no fight and in March the revolution erupted in Russia. Shunning opportunity, the Central Powers stayed put; Hindenburg feared that invaders would resurrect the heroic resistance of 1812.[citation needed]