88 years ago today, August 20, 1937 (July 15, 1937), the country's Southern Northern battlefield was divided into five battle zones. August 20, 1937, the national government divided the country's Southern Northern battlefield into five battle zones: the first battle zone, responsible for the operation of the northern section of Phan, Tsimpu Road, commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-in-chief, Chief Commander-