The "E" In E-1 stands for "enlisted" when the "1" implies the paygrade for that situation. One other pay out categories are "W" for warrant officers and "O" for commissioned officers. Some enlisted paygrades have two ranks. Optimizing your website can help provide better information to search engines like google https://www.seoclerk.com/Link-Building/371800/GIGA-SEO-PACKAGE-POWERFUL-BACKLINKS