Following the war, Hausser participated in the work of the U.S. Army Historical Division, where under the guidance of Franz Halder, German generals wrote World War II operational studies for the U.S. Army, first as POWs and then as employees.
As part of its lobbying efforts, HIAG attempted to "manipulate historical record or simply to ignore it", according to the historian David C. Large, who studied HIAG in the 1980s.