Historical clue formulations

• ___ plume — 2016-07-12
• ___ guerre — 2010-04-24
• ___ plume — 2007-11-06
• ___ plume — 2003-09-07
• With 51-Across, a fake handle? — 2003-05-17
• Plume preceder — 2000-01-15
• ___ guerre — 1999-08-13