 Despite the intense pressure, the New Fourth Army commanders committed insubordination by marching in an unauthorized direction and also missed the deadline to evacuate, added to this were the attacks of the Communist Party to the Kuomintang Forces in Hebei in August 1939 and in Jiangsu in October 1940, so they were ambushed and defeated by Nationalist troops in January 1941.This clash, which would be known as the New Fourth Army Incident, weakened but didn't end the CPC position in Central China and effectively ended any substantive co-operation between the Nationalists and the Communists and both sides concentrated on jockeying for position in the inevitable Civil War.It also ended the Second United Front formed earlier to fight the Japanese.