The Battle of Dunajetz occurred in April 1915, during the Great War when the Russians held a line on the Dunajetz river against a large German force assembled for an attack on Galicia. The Austrians broke the Russian line in the Gorlitz area to the south of the river in early May and although the Dunajetz sector initially held strong, they were eventually forced to fall back because of the Russian collapse in the south. The Austrians and Germans advanced along the entire front for the next two weeks until the Russians halted them at a line on the San river. Research Battle of Dunajetz