Led by twenty-five-year-old Grace Banker, thirty-two telephone operators—affectionately called “Hello Girls” back in the US—became the first female combatants in World War I.

Follow Grace Banker’s journey from her busy life as a telephone switchboard trainer in New York to her pioneering role as the Chief Operator of the 1st Unit of World War I telephone operators in the battlefields of France. With expert skill, steady nerves, and steadfast loyalty, the Signal Corps operators transferred orders from commanders to battlefields and communicated top-secret messages between American and French headquarters.

After faithfully serving her country—undaunted by freezing weather and fires; long hours and little sleep, and nearby shellings and far off explosions—Grace was the first and only woman operator in the Signal Corps to be awarded the Army’s Distinguished Service Medal.