It has been argued, with some credibility, that Bracken never succeeded in impressing his personal authority over the national PC organization. As a western populist, he was distrusted by the party's eastern establishment. There are reports that some senior Tories wanted him removed as leader as early as 1944. More importantly, during the 1945 election, Bracken had promised conscription for the planned invasion of Japan. The Liberal Prime Minister, William Lyon Mackenzie King, by contrast had promised that one division of volunteers would take part in the invasion of Japan. Operation Downfall, the code-name for the invasion of Japan, was widely expected to be bloody campaign as the Battles of Iwo Jima and Okinawa were the "dress rehearsals" for the invasion of the Japanese home islands. Canadian public opinion was not keen on conscription for what was expected to be a campaign that would last several years.