when did france lose alsace and lorraine to germany
Alsace-Lorraine The Imperial Territory of Alsace-Lorraine (German: Reichsland ElsaÃŸ-Lothringen or Elsass-Lothringen) was a territory created by the German Empire in 1871, after it annexed most of Alsace and the Moselle department of Lorraine following its victory in the Franco-Prussian War. The Alsatian part lay in the Rhine Valley on the west bank of the Rhine River and east of the Vosges Mountains. The Lorraine section was in the upper Moselle valley to the north of the Vosges.
Battle of the Frontiers The Battle of the Frontiers (Dutch: Slag der Grenzen, French: Bataille des FrontiÃ¨res, German: Grenzschlachten) was a series of battles fought along the eastern frontier of France and in southern Belgium, shortly after the outbreak of the First World War. The battles resolved the military strategies of the French Chief of Staff General Joseph Joffre with Plan XVII and an offensive interpretation of the German Aufmarsch II deployment plan by Helmuth von Moltke the Younger. The German concentration on the right (northern) flank, to wheel through Belgium and attack the French in the rear, was delayed by the movement of French Fifth Army (General Charles Lanrezac) towards the north-west to intercept them and the presence of the British Expeditionary Force (BEF) on his left flank. The Franco-British were driven back by the Germans, who were able to invade northern France. French and British rearguard actions delayed the German advance, allowing the French time to transfer forces on the eastern frontier to the west to defend Paris, resulting in the First Battle of the Marne.