革命战争年代,在相当长的时间里,我军由于缺乏重武器,尤其是大炮,面对敌人坚固的据点、碉堡、炮楼,甚至是土围子,架梯子爬城墙,伤亡太大不说,还往往无功而返。毛泽东在七大口头政治报告中说,土地革命时期“一个吉安,攻了八次没有攻进去,一个赣州,攻了七次没有攻进去,原因不是热情不够,也不是马列主 For a long time in the revolutionary war, our army, due to the lack of heavy weapons, especially the cannon, and the strongholds of the enemy, the bunkers, the turret, Often fail. Mao Tse-tung said in the seven oral political reports that during the Agrarian Revolution ”one Ji’an had not attacked eight times and one Ganzhou had not attacked seven times. The reason was not that the enthusiasm was not enough, nor was it Marxism-Leninism