Editing Ultra (cryptography) (section)

==Role of women in Allied codebreaking==
[[File:Ann Caracristi (right) at work at SIS.png|thumb|Women cryptologists at work in the U.S. Army's [[Arlington Hall]]]]
After encryption systems were "broken", there was a large volume of cryptologic work needed to recover daily key settings and keep up with changes in enemy security procedures, plus the more mundane work of processing, translating, indexing, analyzing and distributing tens of thousands of intercepted messages daily.<ref>[https://www.nsa.gov/Portals/70/documents/about/cryptologic-heritage/historical-figures-publications/publications/wwii/sharing_the_burden.pdf Sharing the Burden—Women in Cryptology During World War II], Jennifer Wilcox, Center for Cryptologic History, 1998</ref> The more successful the code breakers were, the more labor was required. Some 8,000 [[Women in Bletchley Park|women worked at Bletchley Park]], about three quarters of the work force.<ref name="bletchley park ref">{{cite web|url=http://www.bletchleyparkresearch.co.uk/research-notes/women-codebreakers/|title=Women Codebreakers|work=Bletchley Park Research|access-date=3 November 2013}}</ref> Before the attack on Pearl Harbor, the US Navy sent letters to top women's colleges seeking introductions to their best seniors; the Army soon followed suit. By the end of the war, some 7000 workers in the Army Signal Intelligence service, out of a total 10,500, were female. By contrast, the Germans and Japanese had strong ideological objections to women engaging in war work. The Nazis even created a [[Cross of Honour of the German Mother]] to encourage women to stay at home and have babies.<ref name=mundy/>