Schleicher saw von Papen as a threat so he blocked the martial law plan by saying it would make the Nazi SA and the Communist Red Front Fighters rebel , and that the Poles would invade and the Reichswehr would be unable to cope . Schleicher , who had come to see Papen as a threat , blocked the martial law move by unveiling the results of a war games exercise that showed if martial law was declared , the Nazi SA and the Communist Red Front Fighters would rise up , the Poles would invade and the Reichswehr would be unable to cope .