Historical clue formulations

• Put through hell night, say — 2018-06-26
• Put through hell week, say — 2015-04-10
• Like some broken pledges? — 2015-03-28
• Tormented, as pledges — 2013-02-20
• Initiated unpleasantly — 2009-05-30
• Harassed, as in a fraternity — 2005-05-02