The "E" in E-one means "enlisted" while the "1" indicates the paygrade for that placement. Another shell out groups are "W" for warrant officers and "O" for commissioned officers. Some enlisted paygrades have two ranks. The Army, one example is, has the ranks of corporal and expert in the paygrade https://lukasvqlha.dbblog.net/109855/top-chrome-car-emblems-secrets