The reform era began with the removal of Mao-era elites from leadership positions on a scale theretofore unseen in the People's Republic of China. Rather than depending on incentives to mobilize Mao-era cadres to support Reform and Opening, the new reform leadership brought in younger, better educated pro-reform elites. This article thus proposes a Personnel Model, in which the Communist Party brings in sympathetic cadres to implement major shifts in the Party line. Furthermore, personnel changes were first imposed on the military, then on the civilian apparatus. We show the large scale and rapid implementation of these reforms in 1982–1984 using an original database of over 60,000 cadres drawn from Organizational Histories.