美军派驻延安观察组,是第一个进入革命根据地的美国官方代表团。抗日战争爆发后,中国抗战形成国民党领导的正面的战场和共产党领导的敌后解放区战场,随着中国共产党领导的人民武装力量的迅速发展壮大,解放区的不断开辟和敌后游击战争的广泛开展,给日本侵略者以沉重的打击。美国 The U.S. military was stationed in Yan’an Observation Team and was the first official U.S. delegation to enter the revolutionary base. After the outbreak of the War of Resistance against Japan, the frontal battlefield under the leadership of the Kuomintang and the battlefield of the post-enemy-led liberated areas under the leadership of the Communist Party of China after the Anti-Japanese War broke out. As the rapid development and expansion of the people’s armed forces under the CPC’s leadership, the continuous opening up of the liberated areas and the extensive guerrilla warfare in the enemy’s rear, Invaders with a heavy blow. United States