The Battle of Hengyang (Chinese: 衡陽保衛戰) was the longest defense of a single city of the entire Second Sino-Japanese War. When Changsha fell to the Imperial Japanese Army on June 19, 1944, Hengyang became their next target. The reorganized 11th Army, consisting of 10 divisions, 4 brigades, and over 110,000 men, assumed the task of attacking Hengyang. On June 22, Japanese 68th and 116th divisions received their orders to attack the city and to take it within 2 days, which started the 48 days of siege and defense.