The "E" In E-one stands for "enlisted" although the "1" signifies the paygrade for that position. The opposite spend types are "W" for warrant officers and "O" for commissioned officers. Some enlisted paygrades have two ranks. Precisely the same is real for the positions in the E-nine level. Maritime Corps https://www.seoclerk.com/Link-Building/371800/GIGA-SEO-PACKAGE-POWERFUL-BACKLINKS