Historical clue formulations

• They save the day — 2026-03-23
• Frontline workers, to many — 2023-05-05
• Villains' antagonists — 2023-01-08
• Long lunches? — 2021-09-25
• Lifesavers — 2020-04-12
• Protagonists — 2015-11-03
• Subway fare — 2013-12-15
• Purple Heart recipients, e.g. — 2013-06-30
• Some are decorated — 2009-11-20
• Knights, by nature — 2006-09-23
• Medal winners — 2004-12-08
• Medal winners — 2004-02-08
• See 17-Down — 1998-11-01
• Villains' opposites — 1995-12-11
• Men of the hour — 1994-03-12