The American Red Cross

The American Red Cross had seen service in WWI as nurses, drivers, and canteen volunteers, so it's service in WWII was only a natural progression.

As of 1941, the American Red Cross was divided into several Corps: Administration, Staff Assistance, Production, Braille, Canteen, Motor, Nurse's Aides, Home Service, and Hospital & Recreation. Note that during WWII there was no nurse corps designation, only aides and volunteers.

Red Cross women serving with the military during WWII were sometimes designated as Military Welfare staff. These women had regular military uniforms, and were even sent overseas.

The most well known of American Red Cross women volunteers were sometimes called "Donut Dollies" although they worked with Canteens throughout the US and Europe, as well as Clubmobiles - mobile canteens where the donuts could be made right in the back of a truck. Other Red Cross volunteers were stationed overseas during WWII, most notably the Motor Corps, or drivers, who had also been stationed overseas during the first world war.

Recommended Reading on the American Red Cross in WWII: