When did Japanese forces capture Nanjing during the Second Sino-Japanese War?

Japanese forces captured Nanjing on December 13, 1937, during the Second Sino-Japanese War.123

Following the fall of Shanghai in November 1937, Japanese troops advanced inland toward Nanjing, which was then the capital of the Nationalist government. Despite a defensive effort led by Tang Shengzi, Japanese forces breached the city walls on December 12 and entered the city the following day. This seizure was immediately followed by the Nanjing Massacre, a period of mass killing and violence against civilians and surrendered soldiers that lasted for approximately six weeks.2413