 Complete the following phrase:  The Battle of the Frontiers is a general name for all of the operations of the French armies until the Battle of the Marne. A series of encounter battles began between the German, French and Belgian armies, on the German-French frontier and in southern Belgium on 4 August 1914. The Battle of Mulhouse Battle of Alsace  was the first French offensive of World War I against Germany. The French captured Mulhouse until forced out by a German counter-attack on 11 August and fell back toward Belfort. The main French offensive, the 