Ittô Heisho 一等兵曹 is the second non-commissioned officer rank in the Star Army of Yamatai, placing it after Nitô Heisho and before Jôtô Heisho. In casual or combat situations is acceptable to just say “Heisho” rather than the full rank title. As a non-commissioned officer, an Ittô Heisho is an experienced leader of troops and will likely command one or more Nitô Heisho and several lower enlisted soldiers.
For a full listing of ranks, see Star Army Ranks and Pay Scale.