The "E" in E-1 means "enlisted" though the "one" signifies the paygrade for that place. The opposite pay types are "W" for warrant officers and "O" for commissioned officers. Some enlisted paygrades have two ranks. Promoting researcher and educator at Ahrefs. Mateusz has over a decade of expertise in marketing https://www.seoclerk.com/Link-Building/371800/GIGA-SEO-PACKAGE-POWERFUL-BACKLINKS