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The borders of the area where military battles of the winter Masuria-Augustów operation of February 1915 took place were designated by the rivers and lakes. In the west - by the Wegorapa River and the course of Masurian lakes, in the north and east - by the Neman River, in the south - by the Biebrza and Narew Rivers. The Germans occupied Gumbinenn district whereas the Russians - a part of the Suwalki...