Group 1 - The New Fourth Army transformed from a poorly equipped force to a well-armed military group during the Anti-Japanese War, successfully recovering territories and providing relief to local civilians [1] - The New Fourth Army initially faced severe resource shortages, including food and ammunition, which were exacerbated by the Nationalist government's withdrawal of military funding [8][9][12] - The leadership of the New Fourth Army recognized the need for self-sufficiency and initiated production movements to ensure the army could sustain itself without reliance on external funding [14][20] Group 2 - The New Fourth Army expanded its territory significantly, from 44,000 square kilometers to 68,000 square kilometers, establishing a strong base for agricultural and industrial development [16] - The army implemented a "shared system" to involve local civilians in agricultural production, which not only provided food for the troops but also alleviated the burden on the local population [17] - The establishment of factories, particularly a tobacco factory, became a crucial economic driver for the New Fourth Army, generating significant profits and improving the living conditions of the soldiers [23][26] Group 3 - The tobacco factory, named "Feima," became a successful enterprise, producing a high demand product that not only supported the army financially but also facilitated intelligence gathering operations against enemy forces [25][28] - The New Fourth Army's economic activities contributed to its military capabilities, allowing for better equipment and support for local disaster relief efforts [26][33] - The overall production activities of the New Fourth Army not only benefited the immediate wartime context but also laid the groundwork for future military successes and support for allied forces [33]