Outside the iron gate, the sound of cannons rumbled and gunfire bursts. In front of the position of the 3rd Division, the attacking Japanese troops were exhausted and retreated in an orderly manner under the leadership of the commander.

Major General Sakai Hoji, the commander of the 1st Brigade, watched all this silently with a telescope and a look of joy and sorrow on his face. The Iron Gate Pass was not the main direction of attack of the Japanese army, and the reason why Sakai Hoji invested heavy troops at the beginning was to test it, and if the defenders on the opposite side were vulnerable or lacking in troops and equipment, he would not mind taking advantage of the situation to form a breakthrough. Of course, he didn't have this illusion from the beginning. Sakai Hoji was a thoughtful officer, and before the battle, he had obtained limited information about the Scholar Army through various sources—the reason for this was that he suddenly discovered that this military bloc that had suddenly risen in northern China had little real content in the imperial intelligence system. This made him wary of this mysterious force from the start.

He knows his strength, and the previous 108th Division is not a fish belly unit, but it seems that he was easily eaten by Xuebing Jun and Ouyang Yun. What surprised him even more was that this unit actually had advanced combat vehicles and anti-aircraft weapons. In the previous bombing of Jicha and Jicha, the Kwantung Army's loss rate of participating planes actually reached 50 percent - if the Cadet Army did not have fighters, then their air defense weapons and will to fight would be too terrifying.

Based on the above considerations, Sakai quickly adjusted his positioning, believing that the first task of his brigade was not to attack, but to defend and hold back as many troops as possible, so that the strategy of Kiyoshi Kazuki formulated by Kiyoji could be completed more easily. As a result, unlike the Japanese troops outside Xifengkou and many other passes, the defense fortifications of the 1st Mixed Brigade were very well done, and all kinds of trenches and communication trenches should be in place, and the quality was done according to the standards of the defender.

Tiemen Pass is the most critical location in Ouyang Yun's battle plan, and there are three parts of the army stationed here, Li Ganjiang's Third Division, Stern's Independent Brigade, and the 29th Army Teaching Corps under the command of General Tong Linge. Among them, the strong army of the teaching corps was stationed in a village called Tieshuzhuang ten miles away from Tiemen Pass, and temporarily hid itself.

Sakai Hoji's action fell into the eyes of the three generals, and all three of them could not help but begin to suspect the intentions of the Japanese army. Sakai seems to have been stationed here for a long time. Or have they already seen the battle plan of the Cadet Army? That's terrifying. To know the Dao, so far, the only people who know the Dao plan are the Cadet Army and a few generals with the 29th Army.

After discovering the anomaly of the First Mixed Brigade, Li Ganjiang immediately reported it to Ouyang Yun.

In addition to immediately asking Mu Jiandie and Zhang Zhen to strengthen the secrecy work, Ouyang Yun asked Guo Biao to personally lead a team of wolf-tooth soldiers out of the Great Wall, and conducted reconnaissance along the line of Tiemen Pass and Dashozi, and did not find any signs of abnormal movement of Japanese troops, so he did not take this matter to heart.

There is no terrain conducive to defense outside the Iron Gate Pass, and although the Iron Gate Pass and Xifeng Pass are close to each other, because there is a mountain range in the middle, it takes at least two hours for the two sides to move each other. And if the 3rd Division can't chisel through the position of the 1st Brigade in an hour, then it will be impossible to form a surprise attack on the big shoji after that.

Now, the independent brigade is carrying out this task, and although the speed of the march is guaranteed, it is relative to the plains, and the advantage of the independent brigade has become a disadvantage in the face of the trenched positions of the 1st Mixed Brigade.

Of course, Stern doesn't think so. Because compared with other units of the Cadet Army, the Jewish Independent Brigade may not be the most effective in combat and not the most experienced in combat, but it is the most complete in terms of establishment and types of troops, such as engineers. Other units of the Cadet Army, such as the First Division, the Second Division, etc., have only one engineer company in a division, while the Independent Brigade has one battalion of engineer troops, not only that, but the Engineer Battalion of the Independent Brigade is not only equipped with basic tools such as shovels Compared with the Engineer Battalion of the Independent Brigade, the Engineer Battalion of the Independent Brigade is fully equipped, and it is equipped with a company of mine detectors that are rarely equipped in the Chinese army at present.

Like Sakai Hoji, Stern is also a general who likes to use his brain. After the pre-war meeting, he carefully analyzed all kinds of possible war situations and had his own ideas accordingly. In his opinion, although the battle plan of the military seat this time is bold and adventurous, it is the only opportunity for the Cadet Army at present. Compared with the Japanese army, the Cadet Army cannot be compared with the strength or quality of its soldiers, and because it is necessary to maintain a stable investment environment, it cannot afford to fight a protracted war.

Stern stood behind the iron gates, watched the Japanese retreat in an orderly manner, and when they were about to withdraw from the range of the defenders, he decisively gave the order to attack.

The fence at the Iron Gate Pass was immediately opened, and the flag of the Independent Brigade fluttered on the first truck amid the sound of the loud military trumpet, and the truck brigade and the chariot regiment belonging to the engineer battalion rushed out of the car in the first place. Because today's blow had been considered for a long time, the various trenches dug by the Third Division left an open space of about ten meters in the area facing the Iron Gate Pass.

As soon as the three trucks at the front came out of the trench, the machine guns mounted on the cab opened fire violently. "Rush!" As soon as the chariots following the trucks broke out of the trench area, they began to accelerate, outflanking the engineer battalion from both sides and quickly sandwiching the engineer battalion's convoy in the middle. The chariots dragged the thick black smoke and rushed to the fortifications dug by the Japanese army in one go, during which all the chariots and the machine guns on the trucks opened fire at the same time, and the devils fell down in pieces, and suddenly suffered such a heavy blow that the orderly retreat of the Japanese army turned into a rout.

Sakai Hoji looked at the army that suddenly rushed out of the Kannai, completely stunned, and he said to himself, "What do the Shina people want to do?" Counteroffensive? Thinking of the comparison of the strength of the two sides, he sneered: "Originally, I just wanted to defend well and contain the enemy a little more, but now it seems that it can't be done, it seems that the credit for the first attack belongs to me!" With a fierce wave of his hand, he immediately ordered: "All, pounce on me!" Since the people of China took the initiative to attack, then we will take advantage of this opportunity to attack it. After giving the order, after thinking about it, he asked the staff officer to send a telegram to Kazuki Kiyoji, and reported the situation of the enemy army at Tiemen Pass and the current situation of the army.

The first Battle of the Great Wall was all attacked by the Japanese army, and the Chinese army was passively defensive. Not only Sakai, but also Kiyoji Kazuki thought that the Shina people were crazy, and this was a godsend. As soon as he received a telegram from the 1st Brigade, he ordered the 9th Division to continue the offensive while ordering the 20th Division to rush to Tiemen Pass.