Secret wartime files made public only in 2006 reveal that American GIs committed more than 400 sexual offenses in Europe, including 126 rapes in England, between 1942 and 1945. A study by Robert J. Lilly estimates that a total of 14,000 civilian women in England, France and Germany were raped by American GIs during World War II. It is estimated that there were around 3,500 rapes by American servicemen in France between June 1944 and the end of the war and one historian has claimed that sexual violence against women in liberated France was common.