U.S. Army unit. It was established (as the Women's Auxiliary Army Corps) by Congress to enlist women for auxiliary noncombat duty in World War II. Its first head was Oveta C. Hobby. By 1945 nearly 150,000 women had served. Women relieved thousands of men of their clerical assignments, and many performed nontraditional jobs such as radio operator, electrician, and air-traffic controller. After the war the government requested former servicewomen to reenlist to meet the staffing needs of army hospitals and administrative centres. The WAC became part of the regular army with the passage of the 1948 Women's Armed Services Integration Act. The WAC remained a separate unit of the U.S. Army until 1978, when male and female forces were integrated