"World War I made many radical changes in the lives of American women. It brought to an end the "lady" type. The labor shortage was great, the need of trained workers acute. At the end of 1918, nearly three million women were employed in food, textile and war industries. Occupations hitherto regarded as "men's work" were open to woman. They worked as conductors on street cars. For the first time they were trained as radio operators. Women volunteered for the motor corps in the army and wore uniforms for the first time. "Farmerettes," wearing bloomers, went from the cities to farms. Women did relief work, sold war bonds, organized canteens for the armed forces, joined nursing units. Thousands emerged from their homes into public life. Many remained in industry, either from necessity or choice, when the war ended."