Ruth Curtis served with the American Red Cross in the China-India-Burma theater during World War II. She sailed on the United StatesS General Muir to Calcutta in October 1945. She worked out of the 20th General Hospital near Ledo, Assam, India, and out of the 234th General Hospital in Chabua, Assam, India, as assistant field director for the next several months. She left Calcutta on the United StatesS General Patrick in late December, and by March 1946 had arrived in the United Kingdom. Curtis visited London, Southampton, and Edinburgh before embarking on her return to the United States.