Gaitskell took on Frank Cousins and wanted to show that Labour were a party of government, not just of opposition. At the October 1960 Scarborough Conference two resolutions in favour of unilateral disarmament – proposed by the TGWU and the Engineers’ Union – were carried, whilst the official policy document on defence was rejected. Gaitskell roused his supporters by promising to "Fight and Fight and Fight Again" to reverse the decision. Labour doctrine was that the Parliamentary Party had discretion over the timing of implementation of conference policy. In practice, in the 1940s and '50s, the unions, whose block votes dominated conference, had been broadly supportive of the PLP, but this was now beginning to change. Gaitskell was challenged unsuccessfully for the leadership by Harold Wilson in November 1960.