Elements in the periodic table are grouped as metals, metalloids or semimetals, and nonmetals. The metalloids separate the metals and nonmetals on a periodic table. Also, many periodic table have a stair-step line on the table identifying the element groups.
Quick Facts. Background. The Second Battle of the Marne marked the turning of the tide in World War I. It began with the last German offensive of the conflict and was quickly followed by the first allied offensive victory of 1918.
First Battle of the Marne. At the end of August 1914, the three armies of the German invasion's northern wing were sweeping south towards Paris. The French 5th and 6th Armies and the British Expeditionary Force (BEF) were in retreat. General Alexander von Kluck, commander of the German Ist Army, was ordered to encircle Paris from the east.