McIntire was a fixture in fundamentalist polemics and organizing and in Christian broadcasting, publishing, and lobbying from the 1930s until the early twenty-first century. He spent more than sixty years building the separatist fundamentalist movement’s institutions and spreading the gospels of biblical literalism and ecclesiastical separationism. As such, McIntire represented and shaped a sizable community within American and world Protestantism. A figure of truly global importance, he left his abiding mark on conservative Christian churches on four continents. At home in the United States, he had a significant role in nearly every major theological, ecclesiastical, and political controversy of his lifetime. Most important of all, McIntire played a hitherto underappreciated, but utterly crucial, role in the politicization of conservative people of faith in the latter half of the twentieth century.
From: Fighting Fundamentalist: Carl McIntire and the Politicization of American Fundamentalism by Markku Ruotsila (Oxford: Oxford University Press, 2016), p. 2.
I’m not sure about the “abiding” part. Fourteen years after his death (in 2002, at 95), McIntire has been virtually forgotten – certainly by the public at large.