 Butler later recorded that during his period as acting Head of Government at Number Ten, he noticed constant comings and goings of ministers to Macmillan's study in Number 11 next door—and that those who attended all seemed to receive promotions when Macmillan became Prime Minister.Macmillan had opposed Eden's trip to Jamaica and told Butler (15 December, the day after Eden's return) that younger members of the Cabinet wanted Eden out.Macmillan argued at Cabinet on 4 January that Suez should be regarded as a "strategic retreat" like Mons or Dunkirk.