Although Zhang Jiashi had played the game "Nobunaga's Ambition", what he didn't know was that although the war between the daimyo lords of Japan's Warring States was called "village chief fight", there were also large-scale battles between castles and large castles.

Among the more representative ones are the Battle of Osaka and the Battle of Odawara Castle.

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The Osaka Camp is mainly divided into the Osaka Winter Array and the Osaka Summer Array.

The Osaka Winter Battle was a battle that took place in the Osaka region at the end of the Sengoku period in Japan in the broad sense of the word, and was part of the Battle of Osaka, between Tokugawa Ieyasu and Toyotomi Hideyori and Sanada Nobuyoshi.

Due to a disagreement between the Toyotomi family and the Tokugawa family over the interpretation of the bell inscription on the rebuilding of Hokoji Temple in Kyoto, Tokugawa Ieyasu officially declared war on Osaka. He and his younger brother Sadataka Katagiri and Oda Nagayi were exiled from Osaka, and the Toyotomi family began to prepare for a decisive battle against the Tokugawa family, and Ieyasu announced to the daimyo that he would crusade against the Toyotomi family.

In 1614 (the 19th year of Keichō), Ieyasu asked the monks of the Five Mountains and Hayashi Raksan to interpret a bell inscription on the Toyotomi family's rebuilding of Hokoji Temple in Kyoto. The text mentions "the health of the country" and "Toyotomi", which is believed to be a curse to the Tokugawa family by separating the names of Ieyasu and praying for the prosperity of the Toyotomi family. Therefore, he asked to punish the author of the Zhong inscription, Qing Han, and asked the Toyotomi family to apologize, return the territory, transfer it to Yamato Province, and so on.

Toyotomi sent Katagiri and Osamu Okinaga's mother to explain that Ieyasu refused to meet with Kazumoto, but agreed to meet with the Ōzo Bureau. Kamoto stated that Osaka Castle was the residence of Hideyoshi, and these words led Ieyasu to officially declare war against Osaka. He and his younger brother Sadataka Katagiri and Oda Nagayi were exiled from Osaka, and the Toyotomi family began to prepare for a decisive battle against the Tokugawa family, and Ieyasu announced to the daimyo that he would crusade against the Toyotomi family.

The Toyotomi family began to prepare for war, taking out the gold and silver left behind by Hideyoshi, and gathering the ronin who had formed in large numbers after the Battle of Sekigahara. After that, the daimyo who had been favored by Toyotomi gathered in Osaka, sent a letter, and surrounded and assembled in Osaka Castle. About 50,000 ronins were assembled, including Sanada Nobuyoshi, Chomune Ibe Morikin, Goto Matabei, Mori Katsunaga, Akashi Shoto, Naoyuki Tsukashi, and others.

The Toyotomi army, with Toyotomi Clan Elder Ono Jicho as the center, advocated defending the castle, while the ronin, led by Sanada Nobuyori, advocated a field battle at the Seda River in Omi Province and opposed the defending faction, and decided to defend the fortified Osaka Castle. Ieyasu set up a position at Mt. Chausu, and the Tokugawa army, with about 200,000 troops, surrounded Osaka Castle.

The battle began at the Kizu Kawaguchi and was fought in Shigano, Fukushima, Hakurabuen, Sanada Maru, and other places, and the Toyotomi army was most active in the war of resistance between Sanada Yukimura and Kimura Shigetari.

In order to fight a long war and lack of food in the cold winter, the Tokugawa army intended to negotiate peacefully with the Toyotomi army. The Toyotomi side was shelled by a large cannon to bombard the castle tower, causing Yododen to agree to peace.

The place of negotiation was at the camp of the Tokugawa side of Kyogoku Tadaka, and the Tokugawa family sent Ieyasu's confidant Honda Masajun and the side room to the tea bureau, and the envoy of the Toyotomi side was Yododen's sister Tsunekoin. The condition is that only the main pill can be left, and the second and third no pills must be demolished, and the ditch must also be filled, and the Osamu Ohno and Oda Yurakusai will be executed, so that a peace agreement can be reached.

The Tokugawa army arbitrarily carried out the operation of filling in the ditch and destroying the castle wall.

The project was carried out by recruiting people from all over Japan, but the demolition work took almost a month, from December 23 to January 19 of the following year.

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As can be seen from the records of the Osaka Winter Battle, even Tokugawa Ieyasu, who was already second to none among the daimyos at that time, did not have the idea of destroying the Toyotomi regime at once.

Why did you dismantle Osaka Castle's defensive structures?

The main reason for this was that Osaka Castle at that time was arguably the largest castle in Japan and had a relatively well-defended system.

At the same time as the Osaka Winter Battle took place, several battles broke out in the area around Osaka:

The Tokugawa Army's Tokugawa Army's Tokugawa Army's Tokugawa Army's Asagashi, Asano Nagasho, and

The general commander of the defenders was Akashi Quanto, but Honmaru, who was still in Osaka Castle at the time, could not directly command the defenders, and was responsible for the main attack for the Wasuka team.

The general Yamada Soden set fire to the outside of the fortress to attract the attention of the defenders, and on the other hand, the main force captured five warships in the nearby ship yard and tried to attack the fortress. Under the fierce attack, the outer layer of the fortress was destroyed, and the defenders retreated to Bolaoyuan, and when the Wasuka team learned that the Asano team was about to advance, they immediately ordered the army to advance.

Eventually, the soldiers of the Toyotomi army retreated to Bolaoyon and needed to cross the river, and many of them drowned in the river.

Imfuku and Sushino were located northeast of Osaka Castle, separated by the Yamato River, and the Toyotomi army set up fortifications in both places, and on November 25, Ieyasu ordered Satake Yoshinobu to attack Imasuku and Uesugi Keikatsu to attack Toshino.

On the morning of the 26th, the Uesugi army took the lead in attacking Tsushino, the Toyotomi army retreated, the Uesugi army pursued the deserters, killing a hundred enemy soldiers, the news of the occupation of Tsushino was learned by the Osaka side, Osamu Ohno sent Osaka's Shichijugumi, Watanabe and other 12,000 troops to the Koshino counterattack, the Uesugi army also resisted, the first fence guard Suda Naga fought for a period of time and then retreated, the Toyotomi army was able to occupy the second fence, when the Tokugawa army's Horio and Niwa teams were about to arrive in Tsushino, the Toyotomi army all evacuated Tsushino.

On the morning of the 26th, the Satake army marched towards Imfuku and was met by 300 Toyotomi army defenders at the first fence, and with the overwhelming superiority of the Satake army, the Toyotomi army soon retreated to the fourth fence, and Ono Jinaga's subordinates Yano Masanori and Iida Iesada were killed in battle.

Soon after, reinforcements appeared in the Toyotomi army, led by Goto Matabei and Kimura Shigenari respectively, and successfully suppressed the Satake army back to the first fence, while the Satake military headquarters general Shibu Masamitsu was killed by the iron cannon of the Kimura team, and the Satake army was about to retreat for a while, but with the support of Uesugi, Niwa, Horio and Sakakiwara, the two teams of Kimura and Goto left Imafuku.

Bo Lao Yuan is in Zhongzhou in the Nakatsu River, east of Dog Island. This place is dominated by Susukita Kanexiang, Yonago Rokubei and Pingzi Zhudan. When the Tokugawa Army's Wasuka Zhizhen learned that the fortress was easy to capture, he prepared to attack with Tadao Ikeda, but hoped to get Ieyasu's approval, as the nearby low-lying area made it difficult to march. When Ieyasu personally inspected the Kizu River, he ordered Ishikawa Tadashi to go to Sodajima. On the 29th, Tadashi Ishikawa led his troops to Soishima Island, and at the same time lent three military ships to Kuki Moritaka to march on the Wasuka team at Kizugawa to Hakurabuchi by land and water.

When the defender Heiko saw that the army had arrived, he ordered the withdrawal of the army, and the Tokugawa army captured Borauyuan without a single soldier. Later, Susukita was ridiculed as an orange warrior after this incident.

Fukushima is located in the southwest of Minami-Naka Island, south of Inukojima and Hakurabuen, and at Noda, Osamu Ohno's naval army is stationed, and 2,500 troops are stationed in Fukushima.

On the 18th, Tokugawa's Kuki Moritaka tried to make a direct attack on Noda, but could not capture it, so he began to use the strategy of seizing ships, and the Kuki Navy pretended to attack, but actually captured the warship, and on the 28th, the Toyotomi army was defeated and retreated, and on the 29th, Ikeda Tadatsugu and Togawa Tatsuya attacked Fukushima, but the Toyotomi army in the fortress withdrew early, so the Tokugawa army set fire to Fukushima, and the Tokugawa army completely gained control of the war, after which the Toyotomi army was forced to stay in Osaka Castle.

When the Tokugawa pushed the Toyotomi army back into the city, the Tokugawa army took some time to regroup. At the beginning of December, Ieyasu arrived at Chausuyama. To the east of the Hirano River, there is a main formation of 5,000 soldiers from Kaesugi Keikatsu, 1,500 from Toda Shinobu and 700 from Akita Minoki, and 1,200 from Sakai Ieji at Kurotomon.

In the south of the city, the Sanada Maru folio was 12,000 for Maeda Toshitsune, the 8-chome deployment Matsudaira Tadaki had 10,000 and the 10,000 in Shimoteramachi Date Masamune. In the west of the castle there are Asano Nagasaki's 7,000, Yamauchi Tadayoshi's 5,000, and Ikeda Tadatsugu's 8,800. In the northwest, 1,200 troops were deployed. Johoku Matsudaira Yasushige has 3,200 and Ikeda Toshitaka 8,000. As for the main formation, Tokugawa Hidetada deployed a formation in Okayama with about 20,000 troops, while Tokugawa Ieyasu's main formation in Chausu Mountain had about 30,000 troops. In addition, Shimazu Iehisa led 30,000 troops, but they did not reach the Osaka area.

On the Toyotomi side, Honmaru was commanded by Hideyori with 3,000 troops, and Nimaru had Asai Nagabo and Miura Yoshiyo with 3,000 each. The Mimaru side was dominated by Hideyori's personal guards and Osamu Ohno's subordinates. In the south of the city, there are 5,000 Mori relatives of Chozong and 5,000 Osamu Ohno, and Sanada Maru outside of Minamimaru, Sanada Nobuhiro leads 5,000 troops. On the Nishimaru side, there are Tadasumi Nashima 1300, Mori Katsunaga 5000 and Goto Keiji 3000.

The outer hori in the south of Osaka Castle is a plain, and there is no river to block it, so the weakness is in the south, and at that time, Sanada Nobushihiro built a string-shaped hori and a three-story fence in the south, and added a water hori in the center. On December 3, the Toyotomi army general Goto Kiji reported to Honmaru that the Tokugawa army had begun to approach Osaka Castle and that the Toyotomi army had begun to enter a combat state.

On December 4, the vanguard of the Maeda army advanced towards Sanadabori and was not attacked, but when they reached Sorabori, they were fiercely attacked by the castle generals, and at the same time Ii Naotaka and Matsudaira Tadanao attacked Sanada Maru, but under the fierce attack of Sanada Nobuyori and the Shichitegumi, the Tokugawa army suffered heavy losses, and at noon that day, the entire Tokugawa army retreated. After the war, Ieyasu gave a lecture to the generals who attacked without permission.

On the night of December 15th, Naoyuki and Masayo Ojuku of the Toyotomi Army led dozens of troops to raid the camp of Wasuka to the town, and the death toll of the Wasuka army reached more than 100 people, including the general Nakamura Shigenari, hence the name of the night raid general. However, the night attack did not have much impact on the situation of the battle.

However, at this time, because the Toyotomi army basically lost most of the military fulcrum outside Osaka Castle, Osaka Castle almost became an isolated city besieged by the Tokugawa army, and Osaka Castle, which lost most of its defense capability after the Osaka Winter Battle, also laid an important foreshadowing for the development of the Osaka Summer Battle half a year later with the elimination of the Toyotomi regime.

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After the peace agreement was established, Ieyasu returned to Sunfu from Kyoto and transferred Hidetada to Fushimi, and on the other hand, ordered Kunitomo to forge and manufacture cannons in preparation for war.

In March 1615, news of the turmoil in Osaka reached Sunfu, and the ditch that had been filled in was rebuilt, and Tokugawa conveniently demanded that the Toyotomi family fire the ronin, and Matsukura Katsushige again asked Hideyori to move away from Osaka and arrange a new territory.

Ieyasu went to Ra in April for Tokugawa Yoshinao's marriage, and the daimyo were ordered to prepare for the battle and gathered at Toba Fushimi, and the general Tokugawa Hidetada, who had traveled from Edo, held a military meeting at Nijo Castle, and began to mobilize troops in April, Ieyasu left Sunfu Castle on April 4, and mobilized the daimyo on April 6 and 7, this time mobilizing more than 150,000 troops.

The first unit of the Kawa family to march into Yamato Kou was made by Katsu Mizuno as a general, leading 6,000 troops such as Naoyoshi Horiyo, Naoharu Kuwayama, Honda Richo, Kuwayama Masa, Matsukura Shigema, Niwa Shinobu, Jimbo Aishige, Akiyama Ukin, Fujido Kai, Yamaoka Kei, and Taga Tsunecho, the right vanguard Fujido Takatora and the left pioneer Ii Naotakaka, and the first garrison unit on the right flank was Sakakihara Yasukatsu commanding Ogasawara Hidemasa, Niwa Nagashige, Suwa Tadasumi, Senshi Tadamasa and other troops, and the left wing garrison was commanded by Sakai Matsudaira Tadara, Matsudaira Nobuyoshi, Matsudaira Narishige and Makino Tadanari and other troops; the second army was General Honda Tadamasa, the right wing garrison was commanded by Honda Tadasa, and the left flank was commanded by Matsudaira Yasunaga; the third army was General Matsudaira Tadaaki, the right flank was Matsudaira Tadanao who led the Echizen army, and the left flank was Maeda Toshitsune; and the fourth unit was Date Masamune. The main camp was commanded by Tadashi Sakai, Toshikatsu Doi, and Masasumi Honda, and the troops behind the palace were Tokugawa Yoshinao, who was guarded by Naruse Masanobu and Takeshiro Masanobu, and Tokugawa Yorinobu who was guarded by Naoji Ando and Shigenaka Mizuno.

On April 24, the shogunate issued an ultimatum to the Toyotomi army, demanding that the seal be removed and the ronin be released, but Toyotomi ignored it.

Osaka Castle has become a bare city, and the number of troops is smaller than that of Winter Camp due to the previous dismissal of the ronin. The Toyotomi army decided to strike first and try to gain the upper hand. First of all, Osamu Ohno and Goto Kiji led a team to cross the Dark Pass, and on April 26, they led 2,000 troops to attack Yamato-gunyama Castle of Tsutsui Masaji, and the Toyotomi army set fire to the nearby village, and the Tsutsui army heard that the enemy army was coming, and immediately evacuated to Ise Matsukura Shigemasa and Mizuno Katsunari to counterattack Yamato-gun Castle, and the Toyotomi army learned that the enemy army was coming and immediately retreated, but the troops behind the palace were attacked by Matsukura Shigemasa's troops, and the Toyotomi army appeared and soldiers were killed.

On the 28th, he attacked the autonomous port of Sakai and set fire to the village, engaged the Kuki Moritaka and repelled the Kuki Army, and also sent another team to attack Kishiguchi Tajo, the lord of the castle, Koide Yoshihide, and the two armies confronted each other outside the castle without officially attacking the enemy.

On April 29, when the Jibo army tried to attack Kishu with the help of the Ichika forces, Asano Nagasaki received a report that the Toyotomi army was trying to capture Wakayama Castle with an army of 3,000 troops. The vanguard of the Toyotomi army was Naoyuki Tsukashi, Shigemasa Awawa, and Noritsuna Okabe, who knew that there was an enemy but fought without waiting for the main force, so they were ambushed at Kashii.

The ambush team Kameda Takasa, using guns and artillery fire while retreating, when retreating to the streets of Kashii, merged with the main army, and fought a white battle in the streets, and finally Naoyuki and Tamawa Shigemasa were killed, and Okabe Noritsuna was wounded, but the Asano army did not take advantage of the situation to pursue, and immediately retreated to Wakayama Castle, when Ono Jibo came to Kashii, only the remains of the soldiers on the battlefield could be seen, and finally the Toyotomi army cremated Naoyuki's body, and then returned to Osaka Castle.

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