Blenheim was one of the battles that altered the course of the war, which until then was favouring the French and Spanish Bourbons. It ended French plans of knocking Emperor Leopold out of the war. The French suffered catastrophic casualties in the battle including their commander-in-chief, Tallard, who was taken captive to England. Before the 1704 campaign ended, the Allies had taken Landau, and the towns of Trier and Trarbach on the Moselle in preparation for the following year's campaign into France itself. This offensive never materialised as the Grand Alliance's army had to depart the Moselle to defend Liège from a French counter-offensive. The war raged on for another decade.