June 1917. Arriving in France, General John Pershing found himself unable to communicate with troops in the field. Pershing needed operators who could swiftly and accurately connect multiple calls, speak fluent French and English, remain steady under fire, and be utterly discreet. Well-trained American telephone operators were women-- who were not permitted to enlist. But the U.S. Army Signal Corps promptly began recruiting them. Grace Banker of New...