From the years 1942 to 1945, William A. Rich, a volunteer ambulance driver with the American Field Service, wrote a vast collection of letters home; he served in the Middle East, North Africa, Italy, France, Germany and India. Rich corresponded with his family and girlfriend biweekly about his experiences and opinions, resulting in a collection of more than 300 letters. From these letters, supplemented by additional archival sources, a fascinating narrative emerges. Rich's story explains the complexity of life on the frontlines as a non-combatant of a total war. From the fall of Tunis to the horrors of the relief of Belsen Concentration Camp, the letters provide an unmediated perspective on World War Two through the eyes of a twenty-year old. My thesis seeks to examine whether these letters, and whether war letters in general, are valuable historical documents.