Historical clue formulations

• Army squad leaders: Abbr. — 2024-02-20
• Air Force NCOs — 2020-10-06
• Army E-6s: Abbr. — 2016-10-09
• Certain NCOs — 2015-04-14
• Army NCOs — 2014-09-01
• Some Marine NCOs — 2014-03-19
• Certain N.C.O.'s — 2011-05-08
• Some NCOs — 2011-02-27
• Some Army NCO's — 2010-01-24
• Army squad cmdrs. — 2009-12-11
• U.S.M.C. noncoms — 2009-02-24
• Some N.C.O.'s — 2008-08-27
• Some NCO's — 2007-07-29
• Certain NCO's — 2007-06-17
• Squad leaders: Abbr. — 2006-10-01
• Some N.C.O.'s — 2005-01-07
• Superiors of senior airmen: Abbr. — 2004-04-03
• Some noncoms: Abbr. — 2003-11-07
• Some NCO's — 2003-07-26
• Some Air Force NCO's — 2002-04-21