The General Headquarters of the Northeast Anti-Japanese Federation ordered the 3rd and 4th Divisions under the command of Wang Wennian, commander of the 4th Division, and Guo Bingxun, commander of the 3rd Division, to block the main force of the Japanese attack and drag them to the territory of Sunwu County. After receiving the order, Guo Bingxun, together with Wang Wennian and others, studied the specific issues related to the blocking operation, and immediately issued instructions to the regiments: According to the characteristics of the area of Sunwu County and the situation of blocking and reinforcement in the past few days, each regiment should pay attention to relying on the village to build the necessary fortifications, and the main position should be constructed 100~200 meters outside the village, forming a pinzi or plum-shaped stronghold, and each village is surrounded by independent support points, and each support point can be independently defended or supported by each other; The deployment of troops should be less and more tun, and the commander should master 1/3 of the troops as a mobile force; The firepower allocation should be fixed and mobile, and the frontal firepower and the flank firepower should be complementary, and the defensive front and depth should be echeloned, forming a dense firepower network that complements each other, staggers the distance and the near, and combines the front and the side. It is necessary to use a variety of means to oppose enemy tanks, such as building anti-tank trenches, setting up anti-tank minefields, and organizing anti-tank groups. According to the deployment of Wang Wennian and others, the Anti-Japanese Union assembled one and a half divisions, several garrison regiments, and guerrillas, totaling tens of thousands of troops, and built several defensive fortifications along the Woniu River, waiting to stop the Japanese army and firmly control the pace of the Japanese attack in this area.

At four o'clock on April 13, the Japanese puppet army began to prepare for fire with 30 large-caliber artillery, 47 tanks, and more than 30 aircraft on the 30-kilometer defensive front of the United Nations, among which the bombardment of the two defensive positions on the Beishan front was particularly fierce, in order to open a breakthrough, using nearly 50 artillery pieces, 10 tanks and 5 aircraft, and the fire density was as high as six rounds per second. Such heavy artillery fire made the anti-United Nations fighters in the tunnel feel like they were riding a small boat on the turbulent sea. A strong shock wave shook the tunnel, and many people's teeth cracked their tongues and lips. There was even a seventeen-year-old little warrior who was shocked to death! There was also a lot of dust from the shells buried under the tunnels.

The walkie-talkies of the garrison troops in the tunnel immediately called the command post of the 005th Highland Regiment in the Woniu River as soon as the shelling began, but the artillery fire was too fierce. As soon as the antenna of the walkie-talkie was erected, it was blown up, and in just a few minutes, all the dozen antennas stored in the tunnel were blown up, and it was still impossible to communicate with the command post. And the telephone line was blown up by artillery fire. Niu Shi, the deputy squad leader of the telephone squad of the regiment headquarters, braved the overwhelming artillery fire to check the line, and he dodged the artillery fire along the way, while connecting the broken wire, and the whole large roll of telephone lines he carried with him was used up, and there was still a section left! Niu Shi, who had already been injured in many places, didn't have time to think about grabbing a broken thread with one hand. After using his own body to connect the line and exchanging his life for three minutes of talk time, the commander of the 25th Regiment of the 3rd Division at the regimental command post gave a combat order to the tunnel troops in these precious three minutes.

At that time, only division commander Guo Bingxun was at the command post of the third division, and Zhang Lingfeng, the political commissar of the division, was going to Shengshan Fortress to report the situation here to the general political commissar, and at the same time, he also persuaded the headquarters organs to cross the Nenjiang River westward to take refuge in the first military region, and deputy division commander Zhou Yuewu led the other two regiments of the third division to fight guerrilla attacks in the rear of the devils, and chief of staff Hu Dianhu was going to the logistics department in the rear to receive the ammunition and materials needed. The battle went on for several hours, and the contact between the division headquarters and the front-line troops was completely broken. I didn't know anything about the enemy's situation, so Guo Bingxun had to order the reconnaissance battalion directly under the division to send people to the front line to understand the situation, the first group of people died halfway, and the second group of two people finally came to the No. 5 position on the Beishan Heights after several setbacks. At this time, the soldiers of a battalion on the position were bombed by the Japanese and there was less than a company of soldiers left, and the Japanese puppet army was swarming, and they did not hesitate to immediately enter the battle...... The division headquarters knew the specific situation and it was already dusk on the 13th.

The headquarters of the Anti-Japanese Union was located at the Shengshan Fortress (Khormozhin Fortress) north of the Woniu River. On the 13th, the headquarters only knew that the Japanese Kwantung Army had launched attacks on the Beishan position on the flank of the 3rd Division, the 4th Division's Dongxingtun, Yuantun, Daoban, Nantun, Shanhetun, Hongyue and other defensive positions of the Anti-Japanese Alliance, and did not know anything about other specific circumstances. Zhou Baozhong had no choice but to order the observation post in the upper reaches of the Woniu River to report the situation every half hour, and at the same time ordered the third and fourth divisions to report on their respective positive situations every half hour. Zhou Baozhong thought that the Japanese army was very fierce in the early stage. But it's only three knives, as long as you survive the most difficult period, the rest is to see who can hold up, as long as the main force of the Japanese army is firmly dragged here, the commander-in-chief's offensive plan can also be better implemented and successful, when the main force of the Japanese army retreats without a fight, but the Japanese army dispatched a total of more than 10,000 troops in three brigades, and it is impossible to attack several directions at the same time with these forces alone, of which only one must be the main direction of attack, and the other is a diversionary feint, but to immediately judge which is the main attack, it is impossible to do it at all now, Only take one step at a time, I don't know if the soldiers can withstand this challenge, Chengdu is the North Manchurian base area is completely stable, and if it is defeated, the Anti-Japanese Union will have to retreat to the mountains to fight guerrilla attacks with the Japanese army, and perhaps be wiped out here.

Just when commanders at all levels were anxious, the battle of the Woniu River was in full swing! At 5 o'clock, after an hour of artillery preparation, the Japanese began to extend their fire to suppress the targets in depth. At the same time, the Japanese infantry began to charge, the first to engage fire with the Japanese army was a squad on the outpost position of the 9th Company of the 24th Regiment of the 3rd Division, but the squad leader used his strength improperly, and immediately put the whole squad into battle, under the heavy artillery fire of the Japanese army, he soon suffered huge casualties, and after repelling the Japanese four charges, there was only one soldier left, and he had to retreat into the tunnel to insist on fighting. The platoon commander immediately organized two squads to counterattack, trying to take advantage of the enemy's unstable foothold to regain the position, but the two squads were covered by Japanese artillery fire on the way, and only five wounded were forced to retreat to the No. 3 position. Position No. 4 in the southeast was thus isolated and immediately occupied by the Japanese. Only the most critical No. 9 position, by the ninth company commander Wu Bailong commanded the ninth company defense, Wu Bailong saw that the Japanese artillery fire was extremely fierce, if the more troops were invested in the position, then the casualties would be more and greater, so he only put three people on the surface position at the same time, and the casualties were supplemented from the tunnel, and the No. 9 position became the mainstay of the entire forward position, and always withstood the Japanese attack. Position No. 9 is the gateway of the Woniu River, and the location is extremely important, as long as the No. 9 position is not lost, then the Japanese army will not want to cross the Woniu River. After a morning of fierce fighting, the losses of a squadron of the 41st Wing of the 12th Brigade of the Japanese attack force exceeded 70 percent, and the Japanese army was relatively taboo about the attrition of troops in formation, so they did not dare to use that squadron again, and withdrew the attacking squadron to rest and recuperate, and replaced it with another infantry squadron to fight again, and fought until dusk, but it was also not captured.

The Japanese army launched a fierce attack on the 32nd Regiment of the 2nd Division of the Manchurian Army, and the 28th Regiment of the 4th Division of the garrison relied on the position seriously destroyed by artillery fire to hold on bravely, the tenacity of the battle was called unprecedented in the history of the Japanese army, and it has always been a hundred victories on the battlefield in the past, even if the regular troops of the Chinese people were bombarded by the empire for a while, the troops were scattered, and the people in front of them were still fighting back bravely, and the puppet army troops were repulsed again and again, and the Japanese army finally had to use artillery, The Japanese heavy artillery unit fired nearly 100 shells at the anti-union position, the entire position became a sea of fire, the Manchurian army took advantage of the momentum to attack, the most advanced position only three wounded remained, unable to fight again, was about to retreat into the tunnel, but was already rushed to the position of a puppet army machine gun suppressed more than ten meters from the mouth of the tunnel, this machine gun near the machine gun happened to be due to multiple wounds and coma of a company of three squad leader Sun Ming, he was awakened by the sound of gunfire, saw this scene, roared and pounced, the puppet army's machine gunner was caught off guard and was frightened out of the sky, turned around and fled, Sun Ming just wanted to turn the machine gun around and shoot, the Japanese squadron behind the puppet army had already rushed up, he saw that he didn't have time to fire, grabbed the three grenades around him, rushed towards this Japanese army, and died with the enemy, and he became the first of the twenty-eight warriors who died with the enemy in the battle of the Woniu River! It was not until about 12 o'clock, after more than seven hours of fierce fighting, that the Japanese puppet army attacked the main position, and after more than 20 minutes of extremely fierce hand-to-hand combat, it occupied the position. By 2 p.m., there were only more than 20 people left in the first company, retreating to the tunnel, and the entire Dongxingtun except for the No. 9 position was lost.

In the fierce battle, the ninth company and the first company exhausted the ammunition stored before the war, fired nearly 100,000 rounds of ammunition, threw thousands of grenades and grenades, and due to the long-term high-intensity continuous shooting, the weapon wear and tear was also very amazing, and a total of 10 Type 96 light machine guns, four heavy machine guns, 32 submachine guns, and 130 rifles were damaged, accounting for more than 80% of all weapons! (To be continued.) )