Discuss as:

China marks 75th anniversary of 'Rape of Nanking'

AP

People react as they gather to mourn for the victims of 1937 Nanjing Massacre at the Nanjing Massacre Memorial Hall in Nanjing in east China's Jiangsu province on Thursday, Dec. 13, 2012.

The Associated Press reports — Air raid sirens rang again in Nanjing on Thursday to mark 75 years after a bloody invasion by the Japanese imperial army that remains as one of the most sensitive friction points in the shared history of two Asian powers. 

On December 13, 1937, the Chinese city fell to Japanese forces; what followed was a massacre of war prisoners, soldiers and citizens, known in the West as the "Rape of Nanking." China maintains as many as 300,000 people died; Japan says the toll was far less.

AP

People gather at the Nanjing Massacre Memorial Hall on Dec. 13, 2012.

Peter Parks / AFP - Getty Images

A Nanjing massacre survivor, center, cries after placing flowers on a wall with the names of victims at the Memorial Museum in Nanjing on December 13, 2012.

Peter Parks / AFP - Getty Images

Chinese military personnel attend a ceremony at the Memorial Museum in Nanjing on December 13, 2012.

Follow @NBCNewsPictures

Sign up for the NBCNews.com Photos Newsletter