'The Hello Girls' Chronicles The Women Who Fought For America — And For Recognition

During World War I, some 223 members of the U.S. Army Signal Corps performed a highly specialized service which demanded great skill, nerve and tenacity: Over the vast network of telephone lines that had been hastily constructed across France, these soldiers worked the complicated switchboards connecting the ever-shifting front lines with vital supply depots and military command. At the height of the fighting, they connected over 150,000 calls per day.
Read more: http://www.npr.org/2017/04/06/522596006/the-hello-girls-chronicles-the-women-who-fought-for-america-and-for-recognition?source=Snapzu