When the Taiping Rebellion occupied Nanjing, after 10 days Xiang Rong commanded 10,000 Green Standard Army stationed themselves outside the Nanjing wall.
The forces holding Nanjing were stationed in Ming Xiaoling Mausoleum.
The Green Standard Army was led by First Class Senior General Xiang Rong, Second Class Senior General Her Chyun and Lieutenant General：Zhang GuoLiang. The leaters of the Taiping forces were Shi Dakai, Yang Xiuqing, Qin Rigang and Li Xiucheng.
The regular Army had 80,000 members and the Taiping Rebellion militia force had 460,000.
On June 11856, the Nanjing army tried to stop Taiping forces but the Governor of Jiangsu Jeer Hungar, Mayor of Nanjing and 7,800 army were all killed.
The Qing army lost a battle later in the month and the remaining 36,000 retreated north. On August 9 Xiang Rong suicide by hang in Danyang.
The Green Standard Army forces stationed in northern China defend UK and troops increased the Jiangnan DaYing less strength and money pay salary to soldiers, it was the first and important loss reason;
The leaders intrigued against each other, and this further hindered their cause.