The Hush WAACs were a group of seventeen British women who worked on the front line as codebreakers in France during World War One.
[1][2] Six women were identified as capable of supporting the I(e)C front line codebreaking work at Saint-Omer in northern France, and arrived there on 28 September 1917.
Between 1917 and the end of the war in November 1918, a total of seventeen women were sent to work in the I(e)C codebreaking team.
[1] Once the location became unsafe, the unit was pulled back to Paris Plage on the Normandy coast.
[2] The Hush WAACs initially supported the men who were breaking the German codes, by working to decode known systems and build books of known parts of the vocabulary.