Historical clue formulations

• Captain's subordinate: Abbr. — 2026-03-22
• Burnable storage unit, in brief — 2026-03-08
• Navy submarine head: Abbr. — 2025-07-20
• Rank below capt. — 2022-03-08
• Burnable medium, briefly — 2015-10-09
• Navy rank below capt. — 2015-03-24
• Burnable medium, briefly — 2014-01-11
• Burnable data holder: Abbr. — 2013-01-15
• Mil. leader — 2012-06-17
• Mil. leader — 2009-02-04
• Digital file holder: Abbr. — 2005-02-19
• Spock, e.g.: Abbr. — 2005-01-09
• Spock, e.g.: Abbr. — 2001-12-29
• Mil. chief — 2001-08-05
• U.S.S. Enterprise officer: Abbr. — 2000-06-15
• Naval off. — 2000-02-02
• Mil. chief — 1996-07-03
• Rank below capt. — 1996-03-06
• Rank below capt. — 1995-04-14
• Rank below capt. — 1995-03-18