The Inter-Services Topographic Department (1940–1946) was a joint British Army and Navy organization created during World War II that was responsible for supplying topographic intelligence for all combined operations, and in particular, for preparing reports in advance of military operations overseas.This is an intelligence unit administered by the Royal Navy. Dr. Diamond Jenness was formerly chief of the Division of Anthropology of the National Museum of Canada and during the war headed the Inter-Service Topographical Section of the Department of National Defence. In 1949 he retired from government service.