At this moment, the national capital is already in flames, and the Hojo clan knows very well that this time is the last chance for the Hojo family, if this battle is won, then the Hojo family still has the possibility of survival, if defeated...... Thinking of this, the Hojo clan held the hand of the military and trembled a little, and noticed the strangeness of the Hojo clan, Hojo Phantom glanced at the Hojo clan with concern, and after finding that the other party did not react, he continued to arrange the attack on Sanada Castle.

However, to everyone's surprise, the young Sanada Nobutsuna did not adopt the method of castle construction that was common in this era, and in order to build the fortress in the shortest possible time, Sanada Nobutsuna, who was forced to do so, showed an unexpected talent: he contracted all parts of the castle wall to different groups, which greatly accelerated the construction of the castle through this clear responsibility, and also backed the Koganese Castle, and the merchants of the castle town also actively prepared the materials for the castle in order to ensure that they would not be disturbed by the war. As a result, the small house in the memory of the Hojo clan that was not even built to stay in the longhouse became a large-scale castle almost overnight! Sanada One Night City!

Although the Hojo army was surprised by the speed of the castle construction, it quickly completed the battle preparations: Tominaga Naokumu and Hojo Miran were the two Hojo family yakuns who were responsible for the defense of the north and south, and Shimizu Yasuei and Toyama Tsunakei led the army to attack Sanada Castle, and the Hojo clan sat in the center.

When the Hojo army rushed to the vicinity of Sanada Castle, they didn't wait for the sound of iron cannon shooting, and just when they were puzzled, when they saw the trench that suddenly appeared in front of them, everyone had the urge to jump and scold: this trench was five or six meters deep, and the slope was very steep, and the side near the city wall had a gentle slope, just like a dirt slope, leaving only a few drainage ditches, which was almost artificially changed from a poorly defended flat castle to a mountain castle! But the order to attack was obviously not compromised because the trench was too deep, and they all knew that it was a race against time, and once Tsukahara Muryu pacified Ueno Province and waved his army south, the Hojo family would be in great trouble, so they tried all kinds of ways to go down the trench to the bottom, and then launched a charge. Everyone looked at Sanada Castle nervously, if Sanada Nobutsuna took this opportunity to shoot, the Hojo Army, which had fallen into disarray, would not be able to resist, but fortunately, the Hojo Army troops were all assembled and did not see anyone shooting, so they relaxed and attacked Sanada Castle.

"The lord has an order, I hope you will show the courage of the Hojo samurai and capture Sanada Castle as soon as possible." The herald from this formation said quickly and clearly to Yasuei Shimizu and Tsunakyo Toyama.

"I know, I will live up to the expectations of the lord." Yasuei Shimizu said.

"Sanada Xiao'er is inexperienced, it just saves us time to fill the trench, I'll take the second team up, and you will press the formation for me!" Toyama Tsuneei said to Yasuei Shimizu, and he led the second team to jump off the trench and launch an attack on Sanada Castle.

Sanada Nobutsuna, who was standing on the city wall, looked at the Hojo Army swarming like locusts, and his palms couldn't help but sweat, but as the general this time, he knew that he must not show a panicked look in front of his subordinates, otherwise the army's morale would be chaotic!

"The Hojo Army is already very close, we ......"

"Don't be in a hurry, be calm and composed." Sanada shook his head.

The Tsukahara army has never fired, but now the Hojo army, who is struggling to climb the mountain, is feeling empty, what are you doing, there is a sense of foreboding. Just when the Hojo Army was about to start climbing the wall, Sanada Nobutsuna finally shouted out the long-awaited words of the two armies: "Shoot! ”

For a time, Sanada Castle shot countless deadly bullets, it turned out that Sanada Nobutsuna divided the city wall built into two layers, both with iron cannon muzzles, two teams of iron guns on each floor took turns shooting, in order to support Sanada Nobutsuna, Tsukahara Molong can be said to have given Sanada Nobutsuna full support in terms of armament supply. Hojo Clan Masato never dreamed that there was an iron cannon team of 1,000 people stationed in the small Sanada Castle, and such a luxurious lineup, not to mention at this time, even in the battle of Osaka Castle fifty years later in history, is very amazing. In such a rain of bullets, even if the Hojo Army, which had been bravely moving forward, charged with the belief that it would die, it still inevitably collapsed when it was almost completely killed and wounded in the blink of an eye.

"Bastard! Don't withdraw later! If you are lucky, you will die, and if you must die, you will live, and you will attack me! Yuanshan Gangjing was shocked, and hurriedly pulled out his sword and shouted angrily, and led his guards to rush ahead.

It's okay for a general of this level to stand in the rear, but once he stands on the front line, it is undoubtedly very eye-catching, and the Hojo Army saw a great increase in morale, and the Tsukahara Army naturally focused on the iron cannon on the side of Toyama Tsunakei. But Sanada Nobutsuna stopped this behavior of the iron artillery team, the battle had just begun, and what he wanted was not to defeat the Hojo army, but to stick the Hojo army firmly under Sanada Castle and inflict heavy casualties!

After all, it has been a while since the iron cannon appeared, and Tsukahara Moryū, the fierce rival of the Hojo army, was the first daimyo to use the iron cannon on a large scale in actual combat, so the fear of the unknown weapon of the iron cannon gradually subsided at the beginning, and there was no longer a situation where the iron cannon sound was mistaken for the anger of the gods.

The Hojo clan, who commanded in this formation, also had his eyelids jump when he heard such a dense sound of iron cannon shooting, and the number of iron artillery teams set up by Tsukahara Molong here is really beyond imagination, but this time it was originally a battle that broke the cauldron, no matter how big the casualties were, he had to endure it. "Pass the order, move forward!"

"This ...... The battle has just begun...... "The attendants were just about to dissuade him, but the Hojo clan waved his hand: "I know what you want to say, but this battle is not for the family, we must win before Tsukahara Molong goes south, and they will understand what I mean." ”

Seeing the Hojo clan's horse seal move forward, Shimizu Yasuei and Toyama Tsunade did understand each other's intentions, and they increased their military input, and even Shimizu Yasuei himself chose to go down the trench and command on the front line with Toyama Tsunakei.

Seeing that the strength of the Hojo Army in the trench had increased dramatically, and the pressure on Sanada Castle to defend the city had also increased suddenly, Sanada Nobutsuna showed a smug smile and took over the iron cannon from the guards, Sanada Nobutsuna pointed his gun at Toyama Tsunade, "The whole army, full firepower!" As soon as the words fell, Tsunashi Yuanshan seemed to have been hit in the head by a sledgehammer, and the whole person almost flew up, but the skull was shattered.

Tsunade of the distant mountains, the general of the Hojo family, died in battle under Sanada Castle!

With the death of the spiritual pillar of Toyama Tsunakei and the sudden increase in the firepower of the defenders of Sanada Castle, the attack momentum of the Hojo Army was suddenly contained and they retreated one after another, while the Hojo Army in the rear was still trying to charge, so they made a mess in the trench.

Seeing this, the corners of Sanada Nobutsuna's mouth showed a sinister smile: "You can put fire oil." ”

In the surprised gaze of the Hojo Army, a large number of wooden barrels used to reserve supplies during the voyage were thrown off the walls of Sanada Castle and rolled down the slope towards the trench, and the pungent question gradually filled the air, and the increasingly strong smell finally overpowered the smell of blood, which was noticed by the Hojo Army, and some people instantly reacted: "It's fire oil!" Don't let those casks come near us! So everyone was even more confused, but Shimizu Yasui was still there after all, so he still commanded people to go up and stop the heavy wooden barrel, but what was disturbing was that the pungent smell of fire oil became stronger and stronger, and finally someone found out that the source of this smell was not the barrel, but the soles of his feet! Those hidden drainage channels on the slope are where the Tsukahara Army dumped the fire oil!

"Did you find out? Too late for a pity! Sanada Nobutsuna pulled the bow in his hand full, and a guard had already lit the cloth strip in front of the bow and arrow, and with the first arrow shot by Sanada Nobutsuna, a cloud of fire instantly rose from the entire Sanada Castle and fell towards the trench where the Hojo Army was located!

"Former military ...... It's over......" Hojo Clan Masa, looking at the monstrous fire, almost unsteady on his feet, muttered to himself with the support of the guards.