Historical clue formulations

• Long campaigns — 2022-11-20
• Some attacks on castles — 2022-02-13
• Extended attacks — 2019-03-03
• Protracted battles — 2014-04-02
• Long fights — 2010-12-05
• Some war plans — 2007-09-02
• Long fights — 2002-12-04
• Drawn-out war tactics — 1998-09-16
• Fort-capturing operations — 1996-06-25
• Protracted battles — 1996-03-05