Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Typical nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.
(1860-1948).At the age of 56, John J. Pershing became the commander of the American Expeditionary Force that helped to turn the tide in favor of the Allies and against the Central Powers during World War I. For his leadership during the war, he was promoted to the rank of general of the armies.
While in the Philippines he served as the adjutant general of the department as well as with the 1st and 15th Cavalries. John Pershing-A Shocking Promotion & a Chase in the Desert: Returning home in 1903, as a 43-year old captain, Pershing was assigned to the Southwest Army Division.