During the Second World War, the US Army Signal Corps took tens of thousands of pictures as well as precious video clips covering the Anti-Japanese War in the China-Burma-India Theatre. The image materials have been kept at the US National Archives Museum over the years after the war. Recently, a group of Chinese scholars spent over two months at the Museum sorting out relevant images and video footage and compiled some of them into a book called Guo Jia Ji Yi, or National Memory.