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.
Military History. Germany's Last Chance: Second Battle of the Marne The Second Battle of the Marne took place from July 15 to August 5, 1918 during World War I and saw a German offensive halted and thrown back by the Allies.