As in the Battle of Baotou, five days earlier, the Sui army units had used the night to secretly move toward Wuyuan, and arrived at the predetermined location by March 19. On the afternoon of the 20th, the commando team took the lead in setting out, and at dusk, the troops entered a village seven or eight miles away from Wuyuan New City, and captured a puppet army alive from the pseudo garrison stationed in the village, thus obtaining the enemy's password.
Before launching the Battle of Wuyuan, Fu Zuoyi learned from his fellow villagers that the Japanese troops occupying Wuyuan were each leading two or three horses, and the horses on their horses were full of looted things. Fu Zuoyi thus believed that the fighting power of the Suixi Garrison was not strong, and he encouraged the commando members: "Can such an army (referring to the Suixi Garrison) fight a war?" We officers and men have nothing but guns and ammunition, so victory must be ours. ”
The timing of the commando attack on Gohara was also carefully designed. Fu Zuoyi considered that if an attack was launched at dawn, it would soon be dawn, and at dawn, the Japanese army would be able to rely on the existing defensive facilities and strongholds to resist stubbornly, and the aircraft could also provide support in time, so that not only would the progress be slower, but the casualties of the troops would certainly not be small. After much deliberation, it was finally determined to suddenly insert Wuyuan Castle three hours before dawn.
Seeing that the time for the planned attack had arrived, An Chunshan immediately changed the form of the deep marching army to a horizontal and broad formation, and advanced side by side towards the new city of Wuyuan. When the first column reached the city gate, the Sentries of the Japanese puppet army guarding the city gate came forward to ask for the password. After answering the password, they asked, "Why are you going?" ”
"Reinforcements!" As soon as the words fell, the fighting master who had been prepared for a long time quickly drew his sword and slaughtered the two Japanese soldiers. The other four puppet soldiers looked at it, as if three souls had gone through the top door, and they had lost seven spirits behind their heads, so they quickly obediently surrendered.
Both the walls of the Old City and the New City have been demolished, so the city gate is actually a cordon. After taking control of the city gate, the commandos followed the steps in the training and took advantage of their familiarity with the situation in Wuyuan City to launch a fierce attack on each predetermined target.
The Suixi Garrison was unprepared for the Sui army's night raids. When the people woke up from their dreams, they had to fight in a hurry, some of them were killed in bed before they could put on their clothes, and some of them had just run out of the house and had not yet entered the state of battle, and they had already died under bayonets and grenades.
Upon learning that the Sui army had invaded Wuyuan City, a brigade of the "Suixi Autonomous United Army" on the outskirts rushed to the new city to reinforce. The seventh team of the commando team, which was responsible for blocking aid outside the city, deceived them into saying that they were also puppet troops, and this puppet army believed it to be true, and the seventh team took advantage of the fact that they were sitting and resting, rewarded them with a "machine gun porridge" and scattered them.
After fierce fighting in the middle of the night, the commandos successfully occupied the garrison headquarters, grain warehouses, ammunition depots and other large strongholds east of the Yihe Canal, and the remaining main forces of the Japanese army retreated into the Tunken Office and the Pingshi Guanqian Bureau. The next day, just after dawn, Japanese planes flew over the new city for reinforcements.