Historical clue formulations

• Command ctrs. — 2025-02-25
• Command centers, for short — 2024-02-28
• Central command spots, for short — 2018-02-18
• C.E.O.'s places — 2013-07-06
• Command posts, for short — 2012-03-27
• Mil. command centers — 2011-02-21
• Command ctrs. — 2011-01-07
• Command ctrs. — 2008-08-10
• Command centers: Abbr. — 2008-06-12
• Mil. command bases — 2007-08-13
• Administration ctrs. — 2007-06-16
• C.O.'s hangouts — 2003-11-09
• Command posts: Abbr. — 2000-12-13
• Mil. command centers — 1996-03-19