Styr
a river of eastern Galicia, emptying into the Pripet Marshes, along which heavy fighting took place between German and Russian forces during the World War, in the fall of 1915. Here, and along the Strypa river, further S., the Russians developed a sudden strength after, for several months, during the summer, being driven back along their whole front by the Teutons. The by battle in this region, which began in the first week of October, 1915, continued with unceasing severity into the winter months, and proved the turning point in favor of the Russians, who, in the following spring began an offensive which proved all but disastrous to the armies of the Central Empires along the Easern front.