When and in which work did Comrade Mao Zedong put forward the assertion that "soldiers are the basis for people's victory"?

It was proposed by Mao Zedong in "On Protracted War" published by the Yan'an Anti-Japanese War Research Association in May 1938.

In May 1938, Mao Zedong published "On Protracted War" at the Yan'an Anti-Japanese War Research Association, titled "Soldiers and People are the Foundation of Victory", and discussed the views of all-out war of resistance and all-people resistance. He pointed out: "The deepest root of the power of war exists among the people." He advocated extensive and enthusiastic political mobilization to solve difficult problems such as troop and financial resources, so as to achieve the goal of "uniting the officers and soldiers, uniting the army and the people, and disintegrating the enemy's army." Target. This is a concentrated expression of the Chinese Communist Party’s opposition to the Kuomintang’s one-sided resistance to Japan and its advocacy of comprehensive resistance during the Anti-Japanese War.

The continuous expansion of the anti-Japanese armed forces and anti-Japanese base areas led by the Communist Party of China fully illustrates the correctness of this anti-Japanese war line. "The soldiers and the people are the foundation of victory" is not only the development of the idea that "the people are the real iron wall", but also later "Long live the victory of the People's War", "All the people are soldiers", and "The army and the people are united as one, let's see who can be the enemy in the world" The source of a type of slogan.