

At first, the military recruited only college-educated women strong in science, math, or languages later, as the field rapidly expanded, many thousands more women were welcomed. In addition to breaking enemy codes, they also tested American codes, ran complicated office machines, built libraries of intelligence, and worked as translators.

Almost 70 percent of the Army’s codebreaking force was female, and at least 80 percent of the Navy’s.

During the war, writes former Washington Post reporter Mundy ( The Richer Sex: How the New Majority of Female Breadwinners Is Transforming Sex, Love and Family, 2012, etc.), some 11,000 women served the war effort by working as codebreakers. That women have, during times of national crisis or fervor, bypassed that exclusion has not been so well-known. That women have long been excluded from professional and intellectual life is well-known. When Hidden Figures-both the book and the movie it inspired-reached popular audiences, many Americans were surprised to learn that women played an instrumental role at NASA in the 1960s. A previously untold history of the American women who served as codebreakers during World War II.
