Enlisted personnel are identified by way of their various 'E' grades ranging from E-1 to E-9. For those service branches recognizing a Warrant Officer rank, 'W' grades range from W-1 to W-5. Likewise Officers are scaled from O-1 to O-10.
China has quite a collection of natural bridges, including one that experts say has the longest span of any natural bridge in the world. The Fairy Bridge (Xianren Qiao), in southwestern China's Guangxi Zhuang Autonomous Region near the border with Vietnam, has a 400-foot span.
Paris's Arc de Triomphe, the largest triumphal arch in the world, is at the center of the Place Charles de Gaulle-Ãtoile, at the northwest end of the Avenue des Champs-ÃlysÃ©es (map). The huge arch was commissioned by Napoleon in honor of his Grande ArmÃ©e and its 128 victorious battles (1805-1809).