Historical clue formulations

• Low-ranking NCOs — 2022-03-29
• Sgts. outrank them — 2019-05-16
• Two-stripe NCOs: Abbr. — 2019-03-10
• Inferiors to sgts. — 2009-04-16
• They're over specialists: Abbr. — 2007-03-08
• They rank above Pfc.'s — 1994-10-25