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.
World War I. First Battle of the Marne begins. On September 6, 1914, some 30 miles northeast of Paris, the French 6th Army under the command of General Michel-Joseph Manoury attacks the right flank of the German 1st Army, beginning the decisive First Battle of the Marne at the end of the first month of World War I.
battle of the Marne, two important battles of World War I that are named for the Marne River. In the first battle (Sept. 6â9, 1914) the German advance on Paris was halted at the Marne by the Allies under Joffre, Gallieni, and Sir John French.The German retreat that followed signified the abandonment of the Schlieffen plan (see under Schlieffen, Alfred, Graf von).n the first battle (Sept. 6â9, 1914) the German advance on Paris was halted at the Marne by the Allies under Joffre, Gallieni, and Sir John French. The German retreat that followed signified the abandonment of the Schlieffen plan (see under Schlieffen, Alfred, Graf von).