The China theater of World War II is sometimes forgotten today in the West. But one historian aims to change that, Andrew Moody in Oxford reports.

Rana Mitter is determined to shed light on what is often seen in the West - although clearly not in China - as the forgotten war.

Despite killing up to 20 million people, including many savagely such as in the infamous Nanjing Massacre, and creating between 80 and 100 million refugees, China's War of Resistance against Japanese Aggression (1937-45) is often treated as a World War II sideshow.

"I thought it was one of the great untold stories of the 20th century and certainly the World War II period," he says....