The historiography of World War II is the study of how historians portray the causes, conduct, and outcomes of World War II. There are different perspectives on the causes of the war; the three most prominent are the Orthodox from the 1950s, Revisionist from the 1970s, and Post-Revisionism which offers the most contemporary perspective. The orthodox perspective arose during the aftermath of the war. The main historian noted for this perspective is Hugh Trevor-Roper. Orthodox historians argue that Hitler was a master planner who intentionally started World War II due to his strong beliefs on fascism, expansionism, and the supremacy of the German state. Revisionist historians argue that it was an ordinary war by world standards and that Hitler was an opportunist of the sort who commonly appe