To command and mobilize hundreds of thousands of troops in an orderly manner is a commanding talent unparalleled throughout history. Without the leap in communication technology in the modern warfare system, it would be impossible for anyone to achieve this.
Zhao Chen is actually in the same position; he couldn't directly see the 800,000 men under his command. He could only manage and deploy his troops based on radio communications.
But now, the command and control were in chaos, the original plan was completely without reference value, the troops intended for the main attack were still stuck in the middle of the assembly area, and the rear guard had already begun to abandon their defensive positions.
This was the normal state of dispatch at the level of World War II. Why would an army quickly collapse and be annihilated once encircled? Zhao Chen's current situation was the reason.