 After Nazi Germany surrendered in May 1945 , General Arnold ordered Crump to document the extent of the damage caused by aerial bombardment . This project was code @-@ named " Special Film Project 186 . " Crump and his crew , using color film , surveyed bomb damage inflicted on the major European cities . In addition , Crump recorded the debriefings of Nazi civilian and military personnel in Allied custody such as Herman Goering , as well as the capture of the Ohrdruf and Buchenwald concentration camps by American soldiers . Upon viewing the film of the camps for the first time , Malvin Wald recollected , " Even though it was a summer day , Reagan came out shivering — we all did . We ’ d never seen anything like that . " 
