In April 1940, in order to realize the operational plan of "a stable logistics supply base and completely eliminate the cancer of the Northeast Anti-Japanese Allied Forces within the empire", the Japanese army concentrated the 10th and 25th Divisions, the 11th Division, the 4th Division and the 2nd and 4th Brigades in North Manchuria, and the 1st Division of the Xing'an Army, which was known as the crown of the combat effectiveness of the puppet Manchurian army.

On the afternoon of April 1, with more than 10,000 men, the Japanese army on the West Road attacked westward from Qiqihar, Fufu, Yangjiadian, and Nahe, and successively captured Keshan, Kedong, Yi'an, Baiquan and other border towns under the North Manchurian base area, but on the way they were blocked by the troops of the Fifth Army Division, killing and wounding more than 250 people and dozens of horses. Beginning on 4 April, the Japanese army increased its strength by more than 10,000 troops, divided into six routes, and attacked from Nahe, Yangjiadian, Fufu, Yi'an, Mingshui, Baiquan, and other places to Tongbei, Dedu, Longzhen, and other hinterland towns in the base areas. In order to delay the advance of the Japanese army, the North Manchurian Military Region attacked and harassed with small units and guerrillas along the way, and at the same time concentrated the main force to annihilate its vital forces, and successively blocked the Japanese troops at Chaoyang Mountain, Kekui Mountain, and Hei Blind Zigou in Dedu, and at Xishan, Zhangjiadian, Dongshanwan, and Dongguluhe in Bei'an, killing and wounding more than 2,000 Japanese troops, thus gaining time for the masses to clear the walls and clear the wilderness and the leading organs in the base areas. From April 5 to 9, the Japanese army successively occupied Tongbei, Longzhen, Dedu and other towns.

From 1 to 5 April, the Japanese army on the East Route gathered nearly 10,000 troops and set out from Jiamusi and Fujin, while at the same time, thousands of Japanese troops were dispatched from Yi'an, Fangzheng and other places, and the two Japanese troops jointly attacked the Tangyuan, Fengshan, and Tonghe areas, in an attempt to encircle and annihilate the base army sub-divisions and receive the command organs. and tried to open a breakthrough and merge the other two armies in the dark cloud area. The Japanese army's offensive plan was firmly blocked by Zhang Yunzhi's division of the Second Division of the Northeast Military Region in the area of Qunce Mountain, attacking the hopeless Japanese army. That is, to build a stronghold in the base area and transfer it to the sub-district for clearance. At this time. The troops of the 2nd and 3rd Military Regions and guerrillas in various places turned to the flanks and rear of the Japanese army, and destroyed the Japanese transportation lines in all directions, and attacked the Japanese troops who had built strongholds and dispersed the clearing forces.

In view of the weakness of the Japanese troops on the middle route, the 1st Division and the garrison division led by Yang Jingyu adopted the operational policy of using a main force to move behind the flanks of the Japanese army, intercepting their baggage and cutting off their supplies, and at the same time organizing mobile troops to wait for an opportunity to ambush the Japanese army. The 3rd Regiment of the 1st Division, the 3rd Regiment of the Garrison Division, and the 5th Regiment attacked Hulan County and intercepted more than 200 carts of the Japanese transport team in the Bayan area. The cavalry battalion directly under the division attacked the Japanese grain depot in Lanxi and burned all its food and socks. The attack of the divisional troops of the Third Army on the rear of the Japanese army, such as Magnolia and Dongxing. 8th. In order to maintain the supply line in the rear, the Japanese army dispatched more than 6,000 people from the Acheng and Yanshou areas to attack the anti-Japanese forces in the rear. The 3rd Regiment of the 1st Division and the cavalry units were transferred at the right time, and the two Japanese troops fought each other in Queen's Village, Bayan County, with many casualties. On the night of the 9th, the main force of the 1st Division and the 1st and 3rd regiments of the garrison division attacked Suileng County at night, forcing the Japanese army in Suileng to abandon the city and retreat on the night of the 9th. On the 10th, Major General Tsuneoka Kanji, commander of the 3rd Independent Mixed Brigade of the Japanese Army, led more than 200 people from Harbin to Suihua to inspect and supervise the battle, passing through Heishan Town, Bayan County. Most of the ambush troops of the 3rd Regiment of the 1st Division were annihilated, and the Japanese army mobilized a large number of troops in retaliation, and the two sides fought fierce battles in the areas of Hailun and Suileng.

"Commander-in-chief, the little devil's attack is too fast, and he is about to attack Sunwu County." Chief of Staff Liu Yalou hurriedly caught up with Meng Qingshan, who was marching ahead, with a telegram in hand. The shouts of the chief of staff were heard. Meng Qingshan stopped.

"What's the matter, so anxious, Chief of Staff?" Meng Qingshan asked eagerly.

"Commander-in-Chief. Just after the political commissar called, the Japanese army captured Tongbei, Longzhen, Dedu and other county towns in less than seven days with the help of Tiewang Bakailu. Now the base area is very dangerous, and I am worried about the safety of the headquarters and commissars. ”

"The devil attacked so fast. What about the other two? ”

"The Japanese army on the middle road is fighting a war of attrition with Commander Yang, and the Japanese army on the east road is firmly blocked by the second division outside the Qunce Mountain."

"Chief of Staff, according to general estimates, how many troops will the Japanese army station in a county at most? Meng Qingshan paused and asked.

"Commander-in-chief, generally a brigade in the county and a squadron in each stronghold. As far as the deployment of troops in Longjiang Province is concerned, it is only the number of a brigade. What's the matter, Commander-in-Chief, is there any problem? The chief of staff asked suspiciously.

"The Japanese army has sent a lot of troops before, why can the Japanese army still send thousands of heavy troops, where did they come from so many troops, immediately send a telegram to Guo Bingxun, and ask about the situation in the counties behind the Japanese army?" Meng Qingshan keenly discovered this problem.

Soon, Meng Qingshan received a call back from Guo Bingxun of the Third Division. "What do they say?" Meng Qingshan saw the chief of staff walk in, and asked without raising his head.

"Commander-in-Chief, the situation is clear. Division Commander Guo replied that in addition to a certain amount of Japanese troops, there were also many security regiments to assist in the defense of the various strongholds of the devils. As a result, the Japanese troops in each stronghold were almost completely evacuated to assist in the front-line sweep. Even in the county seat, there was only less than a squadron of Japanese troops and a security regiment plus a police force. The chief of staff replied.

"Pull out." After hearing the empty four words, Meng Qingshan blurted out,

"What's wrong with the Commander-in-Chief?"

"Well, nothing. Originally, when I was a little worried about the Japanese garrison left in Qiqihar City, I didn't expect the little devil to give us a chance. ”

"Send a report to Guo Bingxun and ask him to divide half of his troops and all his heavy weapons to prepare to attack the county town behind the Japanese army, and then, the remaining troops will assist the Fourth Division to block the attacking Japanese army along the road, so that the Japanese army will not be able to divide its troops to help." Meng Qingshan ordered.

"Siege Wei to save Zhao, commander-in-chief, are you going to encircle Wei and save Zhao and transfer out the Japanese troops in Qiqihar?" After listening to Meng Qingshan's order, Liu Yalou immediately blurted out.

"That's right, it's to encircle Wei and save Zhao, as long as the soldiers on the front line of the Japanese army are dragged down, then the Japanese army can only send soldiers from Qiqihar to support, and Qiqihar, which is empty in time and space, can't resist our attack at all." Meng Qingshan said confidently.

"But, commander-in-chief, what if the main force of the Japanese army sends troops back to help?"

"Hehe, it's impossible, the Japanese front troops are about to attack the hinterland of our base area, how can we let our headquarters go to the rescue of the county town behind us, you must know that the ultimate goal of the Japanese army this time is our headquarters."

Guo Bingxun, the commander of the Third Division, who was far away in Longzhen and was preparing to ambush the Japanese army in one place and deal a good blow to the arrogance of the Japanese army, suddenly received an inquiry from the commander-in-chief, which made him feel inexplicable, but he still immediately sent the results of the inquiry to Meng Qingshan, turned around and continued to discuss with Wang Wennian, the commander of the Fourth Division, and others about setting up an ambush in that place.

"Division commander, commander-in-chief order."

Guo Bingxun took the telegram and looked at it carefully, and said with a smile: "Haha, political commissar, chief of staff, Wen Nian, you see that this is exactly what the hero sees, encircling Wei to save Zhao, it is really a good way." Not only did we have to fight fiercely with the Japanese army in the front, but also harassed in the rear of the devils, we had been fighting the Japanese army's baggage troops before, and this time we also hit a few county seats, why didn't I think of it? ”

"Division commander, our attention has always been to think about how to slow down the attacking Japanese army, and it is natural that we didn't think of it. The chiefs, on the other hand, are more comprehensive. Division commander, it is better to let Lao Zhou, who is active in the rear, lead the team to attack the Japanese county seat, while we will give the little devils an ambush here, and then engage in guerrilla warfare with them in this area. Zhang Lingfeng, political commissar of the Third Division, pointed to the map and proposed.

"Okay, just do it, send a telegram to Lao Zhou immediately, I'll gather the team, and let's have a good fight." (To be continued.) )