"The Army Nurse during World War II was at work in every quarter of the globe, serving on land, on the sea in hospital ships and in the air, evacuating the wounded by plane. Because of the rugged conditions under which she served, she was trained to use foxholes and to understand gas defense, to purify water in the field and to crawl , heavily equipped, under barbed wire."
By the time VJ-Day rolled around, the Army Nurse Corps was 55,000 strong.
From Amazon:
G.I. Nightingales: The Army Nurse Corps in World War II