Phase Three in the Battle of Shanghai

On 5 Nov 1937, Japanese 10th Army (equivalent of a western corps in strength) landed in Jinshanwei, south of Shanghai, nearly unopposed due to Chinese troops' concentration near Dachang and other regions north of the city. With the city encircled, and not seeing any positive results out of the Brussels conference, Chiang finally issued a general retreat order on 8 Nov, and by 12 Nov the city was cleared of remaining Chinese soldiers. Japanese advances broke Chinese defenses at Kunshan on 10 Nov, the Wufu Line on 19 Nov, and Xicheng Line on 26 Nov. Chinese Army fell back to the capital city of Nanjing.

http://en.wikipedia.org/wiki/Battle_of_Shanghai