ECHELON
| Date | Clue |
|---|---|
| 2025-07-13 | Tier |
| 2024-08-03 | Word from the French for "rung" |
| 2021-09-11 | Order |
| 2018-09-29 | Level |
| 2015-09-07 | Level of authority |
| 2014-02-23 | Rank |
| 2012-10-21 | Tier |
| 2012-02-24 | French loanword that literally means "rung on a ladder" |
| 2004-06-11 | Level |
| 2003-10-26 | Rank |
| 2002-11-16 | Position |
| 2000-10-22 | Level of command |
| 1998-01-23 | Level |
| 1996-02-27 | Level of authority |
| 1995-03-13 | Level of command |