The old Longdong area was the cradle of the Northwest Red Army, and the main battlefield and strategic base where the Communist Party of China led the people in the Northwest region to carry out armed struggles during the Second Civil Revolutionary War.During the long and cruel years of war, one after another the main force of the Northwest Red Army was born here, developed and marched to the vast Northwest battlefield. Fierce battles took place here again and again and affected the situation of the whole country and the Long March of the Red Army in the South. home.Every inch of land here is sprinkled with the blood of martyrs, every tip is soaked with the sweat of the Red Army, every ditch has left red footprints, and every river is full of fierce legends...

In the white terror environment after the failure of the Great Revolution, the Communists represented by Liu Zhidan and Xie Zichang came to the Longdong area successively to save the revolution. The prelude to the "armed separatist regime of workers and peasants" in the Northwest China. Afterwards, the Nanliang Guerrilla Team and the Northern Shaanxi Guerrilla Detachment were jointly organized into the Northwest Anti-Imperialist Allied Army, and soon they were successively organized into the Shaanxi-Gansu Guerrilla Team of the Chinese Workers' and Peasants' Red Army and the 26th Army of the Red Army. Northwest roots.Under the harsh conditions where the enemy is strong and we are weak, under the leadership of Liu Zhidan and Xie Zichang, the main force of the Northwest Red Army, the local Red Army guerrillas, and the Red Guards, with the Red 26th Army as the main body, and with the support and cooperation of the broad masses of the people, Adopted flexible and maneuverable strategies and tactics, implemented the operational principles of concentrated forces, mobile warfare, guerrilla warfare, and annihilation warfare, successively smashed the enemy's large-scale "advance and suppression", "congregate suppression" and "encirclement and suppression" campaigns, and wiped out a large number of Kuomintang reactionary troops and The local militia armed forces preserved a foothold for the Red Army on the Long March in the south, and contributed to the liberation of the people in the Northwest.

After the Central Red Army and the Red Army from the southern Soviet areas arrived at the revolutionary base areas in Shaanxi, Gansu and Ningxia during the Long March, the main forces of the Red Army, local troops, and Red Guards in the old areas of Longdong, under the unified command of the Central Military Commission, marched south and north, east and west, and fought for Shaanxi. The expansion of the Ganning Soviet Area made new contributions.At the same time, the three main Red Army units also staged a series of heroic dramas in Longdong, such as the Western Expedition to the "Ningma", the General Assembly of the Three Armies, the decisive battle in the mountain castle, and the operation to aid the Western Army, which expanded the scope of the Red Army's activities to all over the world. Everywhere in Longdong.

It can be seen from this that the history of the Red Army in the old Longdong area is actually a history formed by the combination of two intertwined development contexts.One context is the history of the development and fighting of the main force of the Northwest Red Army and local guerrillas that were born and developed in the Longdong Soviet Area; The history of the battle and development of Longdong.These two contexts are interrelated, forming a complete picture of the history of the Red Army in the old Longdong area.Therefore, studying the history of the Red Army in the old Longdong area can not only understand the whole process of the establishment and development of the Northwest Red Army, but also deepen the understanding of the history of the Red Army's Long March and the history of the Xi'an Incident.

In order to carry forward the tradition of patriotism, we have written a book, which is one of the series of works on the history of Longdong Old District. An organic part of the historical research of the old district. In the process of writing this book, I have absorbed the latest achievements in party history research in recent years. Many old comrades, experts and scholars engaged in specialized research have also given enthusiastic help. I would like to express my gratitude here.