1934年8月至1936年10月,中国工农红军第一、二、四方面军及红25军,自长江南北各革命根据地向陕甘革命根据地大规模战略转移,这是人类历史上空前未有的战略大转移。1934年10月,红一方面军主力从瑞金、于都、长汀、宁化等地出发,开始长征,历时13个月零2天,纵横11个省份,长驱二万五千里,途中总共爬过18座山脉(雪山行程共2700里),走过人迹罕至的茫茫草地(草地行程共600里),渡过24条河流,打过大小战斗300多次。红二方面军长征从1935年11月至1936年10月,历时11个月,转战九省,行程一万六千里,进行大小战斗110次。红四方面军长征由1935年5月至1936年10月,历时长达18个月,转战数省,行程八千余里,进行过大小战斗千百次。1935年1月至1936年7月,红一、二方面军先后经过云南,为围堵和剿灭红军,蒋介石与云南省主席龙云,以及龙云与云南各地方当局和驻军就调兵、部防、人事任免等产生了许多文件和电文。本刊选编了云南省档案馆馆藏的部份龙云与蒋介石及下属军官的密电,从中我们不难看出当时红军处境的艰险及长征胜利的不易。 From August 1934 to October 1936, the First, Second, and Fourth Army Corps of the Chinese Workers and Peasants’ Red Army and the Red Army 25 were transferred to the large-scale strategic base of Shaanxi and Gansu since the revolutionary bases in the north and south of the Changjiang River, which is unprecedented in human history Strategic transfer. In October 1934, the Red Army first set off from the Ruijin, Yudu, Changting and Ninghua areas and started the Long March, which lasted 13 months and 2 days and 11 provinces and autonomous regions swept 25,000 miles. Climbing 18 mountains (2,700 miles of snow-capped mountains), walking through the vast grassland that is inaccessible (600 miles of grassland trips), crossing over 24 rivers and fighting more than 300 battles of size. The Red Army march from November 1935 to October 1936 lasted 11 months and fought in nine provinces. It traveled for 16,000 miles and carried out 110 size fights. The Long March of the Red Army, from May 1935 to October 1936, lasted 18 months and fought in several provinces with a total of more than 8,000 trips. Thousands of large and small battles were fought. From January 1935 to July 1936, the Red Army and the Second Front Army passed Yunnan to contain and destroy the Red Army. Chiang Kai-shek and Yunnan Provincial Chairman Long Yun, as well as Longyun and Yunnan local authorities and garrisons, restructured their troops, , Appointment and dismissal of personnel and many other documents and messages. Selected from Yunnan Provincial Archives collection part of Longyun and Chiang Kai-shek and affiliated officers of the secret, from which we can easily see the difficulties and difficulties the Red Army and the Long March victory is not easy.