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.
Battle of Dunkirk. The Battle of Dunkirk lasted from around May 25 to June 3, 1940. After the Phony War, the Battle of France began in earnest on 10 May, 1940. German armour burst through the Ardennes region and advanced rapidly driving north in the so-called sickle cut.