Erzurum Offensive

The Erzurum Offensive (Russian: Эрзурумское сражение Erzurumskoe srazhenie ;Turkish: Erzurum Taarruzu) or Battle of Erzurum (Turkish: Erzurum Muharebesi) was a major winter offensive by the Imperial Russian Army on the Caucasus Campaign that led to the capture of the strategic city of Erzurum. Ottoman forces, in winter quarters, suffered a series of unexpected reverses that led to a decisive Russian victory.

• http://en.wikipedia.org/wiki/Erzurum Offensive