梁山在运河以西、黄河北岸,周围一片沼泽。古时黄河决堤,河水灌入沼泽地,形成了数百里的水泊。金代以后江河改道,水泊干涸变成平地。1939年8月2日,八路军115师在梁山歼灭日伪军500多人,成为我军主力进入山东的首次胜利,鼓舞了当地抗日军民的信心。八路军115师在平型关大捷后,南 Liangshan west of the canal, the north shore of the Yellow River, surrounded by a swamp. In ancient times the Yellow River burst into the embankment, the river poured into wetlands, forming hundreds of miles of waterways. After the Jin Dynasty River diversion, dry lakes into flat ground. On August 2, 1939, the Eighth Route Army 115 Division wiped out more than 500 Japanese and puppet troops in Yangsan and became the first victory of our army in entering Shandong and encouraged the confidence of the local anti-Japanese army and people. The Eighth Route Army 115 division in the plane after the victory, South