Group 1 - The core viewpoint highlights the contrasting leadership development and roles of the Eighth Route Army and the New Fourth Army during the Anti-Japanese War, with a notable saying that Eighth Route Army's division-level cadres mostly became marshals, while New Fourth Army's division-level cadres were often awarded general titles [1][3]. - The ten marshals played significant roles in the Eighth Route Army, with key figures such as Zhu De as the commander and Peng Dehuai as the deputy commander, showcasing their strategic importance [1]. - The New Fourth Army's leadership included Chen Yi as the army commander, who led operations in southern China, indicating the diverse command structure and operational focus of the New Fourth Army [1]. Group 2 - The ten generals had complex roles, with figures like Su Yu starting as a deputy commander and later commanding large forces, reflecting the evolution of military leadership within the New Fourth Army [3]. - Xu Haidong and Huang Kecheng had similar career trajectories, transitioning from the Eighth Route Army to significant positions in the New Fourth Army, demonstrating the interconnectedness of the two forces [5]. - The contributions of generals like Chen Geng and Tan Zheng in political and military roles were crucial for the success of the Anti-Japanese efforts, emphasizing the importance of both military and political leadership [7][11].

Group 1 - The article discusses the formation and leadership of the New Fourth Army during the Second Sino-Japanese War, highlighting its significance as a guerrilla force within the National Revolutionary Army [1] - The New Fourth Army was established in 1937, unifying guerrilla forces from eight southern provinces under the leadership of key figures such as Chen Yi and Su Yu [1][2] - The article details the four main detachments of the New Fourth Army, including their origins, commanders, and roles during the war [2][4][5][8] Group 2 - The First Detachment was primarily composed of Red Army troops from the Soviet area, with Chen Yi as its commander, who later became the overall commander of the New Fourth Army [2][4] - The Second Detachment was formed from guerrilla forces in Fujian and Zhejiang, led by Zhang Dingcheng, who played a significant role in coordinating military efforts during the war [4] - The Third Detachment, under Zhang Yunyi, was established from guerrilla forces in Eastern and Northern Fujian, contributing to the overall strategy of the New Fourth Army [5] - The Fourth Detachment was formed from the Red 28th Army and other guerrilla units, led by Gao Jingteng, whose leadership faced challenges during the war [8]