Biographical material on Lin Piao, Minister of Defense and leader of the Great Proletarian Cultural Revolution. Lin's importance on the Chinese political scene derives not only from his part in the Cultural Revolution but also from his political strength and his position as "close comrade in arms" to Mao Tse-tung. He is now officially regarded as Mao's successor. This article, published by the Institute for the Study of Chinese Communist Problems, Taiwan, contributes to an understanding of Lin's qualifications and provides interpretative material on his personality. Background information is given in an introduction by T. W. Robinson.