The Battles of the Dvina were a series of inconclusive engagements during 1915 and 1916 during the Great War between German and Russian forces along the river Dvina, a natural barrier in front of the Latvian capital Riga. The first battle, during August and September 1915, swayed back and forth across the river but made little difference to either side's ultimate position. The second battle flared intermittently from January to August 1916 as a series of attacks by Field Marshal Paul von Hindenburg were repulsed by the Russians under General Alexei Kuropatkin. Before either side could gain an advantage, the Galician front flared up and the Dvina front was left relatively quiet. Research Battles of the Dvina