Answer:
Between 1930 and 1934, the Nationalists under Chiang Kai-shek launched a series of five encirclement campaigns against the Chinese Soviet Republic. Under the leadership of Mao, the Communists employed guerrilla tactics to successfully resist the first four campaigns, but in the fifth, Chiang raised a huge force and built fortifications around the Communist positions.
The Communists decided to break out of the encirclement at its weakest points, and the Long March began on October 16, 1934. Secrecy and other tactics confused the Nationalists, and it was several weeks before they realized that the main body of the Red army had fled. The retreating force initially consisted of more than 85,000 troops, by some estimates, and thousands of accompanying personnel. Weapons and supplies were borne on men’s backs or in horse-drawn carts, and the line of marchers stretched for miles. The Communists generally marched at night, and when the enemy was not near, a long column of torches could be seen snaking over valleys and hills into the distance.
After enduring starvation, aerial bombardment and almost daily skirmishes with Nationalist forces, Mao halted his columns in northern Shaanxi on October 20, 1935, where they met other Red army troops. The Long March was over. By some estimates, 8,000 or fewer marchers completed the journey, which covered more than 4,000 miles and crossed 24 rivers and 18 mountain ranges.