• Audrey was fluent in Dutch, English, Flemish, French, Italian and Spanish.
• Under the difficult circumstances of World War II, Audrey ate tulip bulbs and tried to bake grass into bread.
• In fact, Audrey turned down the lead role in George Stevens’ Diary of Anne Frank because, as a young girl in Holland during the war, she witnessed Nazi soldiers publicly executing people and herding Jews onto railroad cars to be sent to death camps. Audrey identified with Anne’s story of Nazi-occupied Amsterdam so much that she claimed her participation in the 1959 film would have been much too realistic and painful in memories.
• During World War II, 16-year-old Audrey was a volunteer nurse in a Dutch hospital. During the battle of Arnhem, her hospital received many wounded Allied soldiers. One of the injured soldiers that young Audrey helped nurse back to health was a young British paratrooper and future director named Terence Young. More than 20 years later, Young directed Hepburn in his thriller, Wait Until Dark (1967).
• Audrey was a special ambassador to the United Nations UNICEF Fund for helping children in Latin America and Africa, from 1988 to 1993
• She herself was involved in an underground communication ring in Nazi-occupied Holland. It is believed that part of the reason she was such a small woman was because of the hunger and poor conditions she lived under at that time. She was a recipient of some of hte first UNICEF food supplies to ever be delivered. This is why she was such a supporter of UNICEF. 

http://www.princessmonkey.com/audrey/part3.html