In fact, during the battle of Kawanakajima, it was difficult for the Uesugi army to supply food and grass. Among them, the main difficulties came from two aspects: first, compared with the Takeda Army, the Uesugi Army's supply line from Echigo was single and narrow, and the response was poor; 2. Most of the Okushinano lords such as Iwai, Takanashi, and Inoue, who had been able to serve as the vanguard and servant army for the Uesugi army in the previous battles of Kawanakajima, have now been expelled by the Takeda family and have become the "Hokushin squire" living in Echigo.

Therefore, Kenshin and Asada, before starting a decisive battle with the Takeda army, had to leave a full 10,000 troops at Naganuma Castle, Suda Castle, and Zenkoji Heiichi to maintain the security of the supply line. Takeda Shingen, on the other hand, has no worries about this at all, whether it is from Suwa and Chikuma with Fukashi Makoto as a transit point, or from Saku and Koprefectura with Komojo Castle as a transit point, the grain route is unimpeded, and the Kaizu Castle on Kawanaka Island is surrounded by wealthy families loyal to Takeda, so it can also "feed according to the place".

Hachimanwara and Kaizu Castle happened to be located on the road between Mt. Tsumeme and Zenko-ji Temple, and Takeda Shingen's move not only cut off the connection between the front and rear of the Uesugi army, but also posed a great threat to the 10,000 Uesugi troops left around Zenko-jidaira - once the Uesugi army made a move on Mt. Tsume-hei, then the Takeda army could divide a special team to first defeat the Uesugi army left behind in the area of Zenko-jidaira and then turn back to deal with the main force of the Uesugi army on Mt. Tsumi-he; If the main force of the Uesugi army on Mt. Tsumi-nu does not move, then the Takeda army will also continue to consume the troops without moving, and the soldiers will not be bloody, and after the Uesugi army runs out of food and grass, it will starve to death on Mt. Tsumi-nu.

Although Mt. Tsumime is the commanding height around Kawanaka Island and has abundant water sources, it has an Achilles' heel - it cannot produce grain and grass, once the grain and grass of the Uesugi army are exhausted, Kenshin cannot make the army under his command "look at the plum to quench thirst" and "draw cakes to satisfy hunger", even if Kenshin does not want to fight a decisive battle, he has to take the initiative to go down the mountain to start a decisive battle with the Takeda army. But Kenshin was strong because she could calm down, and she knew that if she hurriedly went down the mountain and went to Zenkoji Temple in Hachimangaara, she would inevitably be waiting for more than 45,000 Takeda troops who were waiting for work, which was equivalent to entering the middle of the mountain. Therefore, Kenshin ordered the whole army to be patient and stand by, and constantly monitor every move of the Takeda army in Haijin Castle below. And what is Humility waiting for? It's very simple, she is waiting for Takeda Shingen to act, only if Takeda Shingen moves first, she can take the lead and capture the fighter that is beneficial to her.

Uesugi Masato's judgment, although risky, is the most reasonable. Twenty-six days had passed since the Uesugi army encamped in Mt. Tsumi-ta and Saijo Castle on March 20 until April 15, and although there had been some grain and grass in Saijo Castle before, it had reached its limit after nearly a month of consumption. But at this moment, the dense cooking smoke in Kaijin Castle showed that Takeda Shingen could no longer hold his breath, and the Takeda army moved.

Although Takeda Shingen has always been thoughtful, but because of this smoke, he finally fell short. At the last moment, in order to be able to completely annihilate the Uesugi army that entered Okushinano, he still failed to hold back his temperament, and made a resolution that everyone argued about - from Kaizu Castle, he personally led more than 45,000 troops under the banner to Hachimangahara to wait for the arrival of the Uesugi army; Generals such as Masanobu Takasaka, Nobubo Baba (Ishikemasa), Yukitaka Sanada, and Nobushige Oyamada led an army of 20,000 to march in a roundabout way from the eastern part of the mountain to the southeast of the mountain. Therefore, the task of the Takeda Army, a partial division, was to go around to the flank and rear of Mt. Tsuma-me and drive down the Uesugi army, which had been standing still on the mountain, while the main team of the Takeda Army in Hachimangahara stayed there steadily, waiting to intercept the defeated and retreating Uesugi army, so as to achieve a complete victory.

However, Takeda Shingen, Yamamoto Kansuke and others did not take into account the details of the woodpecker's tactics. First of all, the partial division composed of generals Takasaka Masanobu, Baba Nobubo, Sanada Yukitaka, and Oyamada Nobushige had only 20,000 men, and attacked the more than 48,000 Uesugi troops stationed at Mt. Tsuma and Mt. Saijo. Even if this partial division of the Takeda Army attacked, the Uesugi Army would definitely be defeated like a mountain, obediently running to Hachimangahara, waiting to be cut off by the Takeda Army? Besides, Takeda Shingen has now sealed off the vicinity of Hachimangawa, so why did he make such a move and make a decision to divide his troops and attack on both sides?

Although there are many doubts and shortcomings in this tactic, there is no doubt that Takeda Shingenli adopted this unreasonable plan against public opinion, and what is the motive for it?

Takeda Shingen's motive is very simple, as mentioned before, he intends to solve the battle of Okushinano once and for all, and spare energy to complete a higher goal as soon as possible, and his most hope in this battle is to annihilate the main forces of Kenshin, Asada, and Uesugi in the area of Kawanakajima. The higher goal was to tear up the "Koo Alliance" and destroy the Tokugawa family, which had become weakened by the previous attack by Mikawa. This kind of behavior is normal for Shingen Takeda, whose treachery has become commonplace. However, if you want to completely seize the fertile land of the Three Rivers, you must pay the price for betraying the alliance.

The best course for the Takeda family was to defeat Kenshin on Kawanakajima and suppress Hokuriku, and then retreat south to reach a peace agreement with the Asada. Of course, if the court refused, he would send troops into the Kanto region to force the court to admit the fait accompli, and then annex the Tokugawa family, so that after obtaining the Mikawa province with more plains and a large amount of crops, the Takeda family would become even stronger. At that time, not to mention the domination of Kashinotsu, even to pacify the world, it is not known.

Of course, although this idea was formed in Takeda Shingen's mind, it was not made public. As a first step in his ambition, Takeda Shingencai entered Kaizu Castle and cut off the connection between Zenko-teradaira and Mt. Tsume, hoping to annihilate the isolated Uesugi army when it broke through when it ran out.

But on April 15, when Takeda Shingen had calculated that the Uesugi army was about to run out of food and grass, and that it was about to be completed, he suddenly felt that there might be a mistake in the plan—what if Kenshin took a salary from the bottom of the kettle and did not go to Hachiwagahara, but rushed down from Mt. Tsuna-Nu and drove straight in the opposite direction, breaking into the central and southern parts of Shinano to loot grain to feed the war? Thinking of this, Takeda Shingen couldn't help but gasp, most of the Takeda family's forces were concentrated in the area of Kawanakajima, and the garrison in the rear was very empty. So, will Humility take this step? Takeda Shingen immediately recalled the previous battles of Kawanakajima, when he also succeeded in cutting off Kenshin's back road? However, Kenshin abandoned the rear, avoided the real and attacked the false, and finally succeeded in returning to Echigo. Kenshin, the "dragon of Echigo", has always adhered to the attitude of attacking first, and this kind of experience Takeda Shingen really can't be unguarded.

In line with the attitude of picking up the missing and filling in the gaps, Takeda Shingen sent a partial division to attack, and the destination of this partial division was the back of Mt. Tsumi. Therefore, the partial division led by Takasaka Masanobu, Baba Nobubo, Sanada Yutaka and others was not "violently pecking at the back of the trunk", as Yamamoto Kansuke said, but completely sealing the possible way out of the Uesugi army. No matter which direction the Uesugi army goes, this team can cooperate with the partial division at any time and annihilate it. The grandiose cooking smoke in Kaizu Castle was not because of Takeda's carelessness, but because Takeda Shingen didn't want to hide it from the Uesugi Army at all. In his eyes, humility is already a turtle in an urn. The plan of Takeda Shingen, Yamamoto Kansuke and others was good, but he underestimated the fighting spirit of the Uesugi army and the Jedi broke out, and he would soon taste the bitter fruit of the taboo of dividing troops before the war.

At this moment, although the big war is imminent, both sides think they have the chance to win. Almost everyone on the Takeda side thought that they would be warriors to win the trust of the Takeda Army, and the 20,000 Takeda Army's partial divisions went to Mt. Tsumeme with this feeling, and the Takeda Army's main camp also went to Hachimangahara on Kawanakajima with the same feeling.

Finally, under the arrangement of Bishamentian, the battle of dragons and tigers is about to begin.

Chiyome Mochizuki, Danzo Kato, Yukishige Yokotani and other Uesugi ninjas infiltrated the Takeda Army camp and conveyed to Takeda Shingen that "the Uesugi Army is still stationed on Mt. Tsumeme and Mt. Saijo".

Takeda Shingen was overjoyed, and urged the whole army to deploy Kawanakajima in a formation of fish scales, and wait for the arrival of the Uesugi army to deliver a fatal blow. In fact, a large number of Xuan Ape and Takejaku Ninja were active near Kawanaka Island, and intercepted the news that "the Uesugi Army on Tsuma Daughter Mountain is building a large number of horse barriers" conveyed to Takeda Shingen by all the Takeda Army's partial divisions. In the hours leading up to the battle, both armies thought they would win, but because they were facing an old enemy, each ashigaru was still nervous. Kenshin looked at the surrounding army and found that the men and horses were already a little tired, and the enemy army could not be seen clearly in the fog. She had no choice but to continue to send out the object, and ordered the whole army: "The whole army can rest in place, but the weapons must not be left in their hands, and the whole army must not make noise." Eat the dry food they bring with them slowly, and the samurai on horseback can dismount but not leave the horse. You can't take off your armor but you can sit on the spot, and when you hear about the Conch, everyone will report to the heart of death to participate in the battle! ”

After the letter conveyed the order, he sat under the banner and the dragon flag. The two swords and eight banners of the Heavenly King are separated, and they are a little further back. As the temperature plummeted at midnight, Kenshin took out a bottle and drank a full glass of wine in order to warm up - the world will change its trend at this moment, and it is time to settle the old enemy.

As the sky grew brighter and the morning breeze blew, the thick fog gradually dissipated, and Takeda Shingen still stared intently at the fog that had not yet dissipated in front of him.

"The night raid will fail!" As time passed, Shingen Takeda realized that what he expected had not happened, and he couldn't help but start worrying about it. He is very powerful, and once he shows panic, the whole army will inevitably fluctuate.

After a while, a seriously wounded hundred-legged man staggered to the Takeda Army's main camp and informed Takeda Shingen of bad news - the Uesugi Army's vanguard was only one and a half miles away from the Takeda Army's Pioneer Sanzhi Tiger Yoshibe!

In order to continue to hold on to Yawatawara and wait for the partial division to arrive to flank the main force of the Uesugi army, Takeda Shingen had to immediately order all the divisions to change their formations, changing the originally arranged fish scale formation into a crane wing formation, and the three branches of Toyoshi did not make any changes.