It was a dangerous situation in terms of military command. More than that, Hideyoshi feared that if Shonyu became discontented, Ieyasu would certainly try to tempt him to change sides.
Ikeda Shonyu is my subordinate now. If he imagines himself to be the butt of dishonorable rumors, his haste is not unreasonable, Hideyoshi thought.
The present situation was deadlocked, and a positive move to invite some sort of change would have to be played.
"That's it," Hideyoshi said aloud. "Rather than wait for Shonyu to come here tomorrow morning, I'll send a messenger to him tonight."
Upon receiving the urgent letter, Shonyu flew off toward Hideyoshi's camp. It was the fourth watch, and the night was still dark.
"I have decided, Shonyu."
"Good! Are you going to favor me with the command to make a surprise attack on Okazaki?"
The two men finished all the preliminaries before dawn. Shonyu joined Hideyoshi for breakfast and then returned to Inuyama.
On the following day, the battlefield outwardly appeared to be in the doldrums, but there were subtle signs of delicate movement.
Resounding in the thinly clouded afternoon sky, both enemy and ally gunfire could be heard coming from the direction of Onawate. From the Udatsu Road, sand and dust could be seen far off, at the place where two or three thousand soldiers of the westerr army were beginning to attack enemy fortifications.
"The general attack is starting!"
As they looked out into the distance, the generals felt a wild surging excitement. This was, indeed, a turning point in history. Whichever man won, the age would belong tc him.
Ieyasu knew that Hideyoshi had feared and respected Nobunaga more than anyone else. Now there was no one he feared or respected more than Ieyasu. Not a single banner in the entire camp on Mount Komaki moved that morning. It was almost as though strict orders had been given not to react to the small attacking sorties from the western army that would be testing the eastern army's resolve.
Evening arrived. A corps of the western army that had withdrawn from the fighting delivered a sheaf of propaganda handbills they had picked up along the road to Hideyoshi’s main camp.
When Hideyoshi read one of them, he became enraged.
hideyoshi caused the suicide of Lord Nobutaka, the son of his former lord, Nobunaga, to whom he owed so much. He has now rebelled against Lord Nobuo. He has instantly caused turmoil within the warrior class, has brought disasters to the common people, and has been the chief instigator of the present conflict, using every means to achieve his own ambitions.
The flyer went on to claim that Ieyasu had risen up with a true justification for war and that he led the army of moral duty.
An expression of rage—rare for Hideyoshi—contorted his face. "Which one of the enemy wrote this tract?" he demanded.
“Ishikawa Kazumasa," a retainer replied.
“Secretary!" Hideyoshi yelled, looking over his shoulder. "Have placards raised everywhere with the same message: The man who takes Ishikawa Kazumasa's head will receive a reward of ten thousand bushels."
Even with that command, Hideyoshi's anger did not subside, and calling for the generals who happened to be present, he gave the order for a sortie himself.
So this is how that damned Kazumasa behaves!" he fumed. "I want you to take a reserve corps and help our men in front of Kazumasa's lines. Attack him throughout the night. Attack him tomorrow morning. Attack him tomorrow night. Follow one attack with another, and don't give Kazumasa the chance to take a breath."
Finally he called out for rice and pressed for his evening meal to be brought in right away. Hideyoshi never forgot to eat. Even as he was eating, however, messengers continued to go back and forth between Gakuden and Inuyama.
Then the final messenger arrived with a report from Shonyu. Mumbling to himself, Hideyoshi leisurely drank the soup from the bottom of his bowl. That evening, the sound of musket fire could be heard far behind the main camp. The firing had been echoing here and there on the front lines since dawn and continued until the following day. Even now this was considered to be the opening action of a general attack by Hideyoshi's western army.
The first blow of the day before, however, had been a feint by Hideyoshi, while the real movement had been the preparations at Inuyama for Shonyu's surprise attack on Okazaki.
The strategy was to divert Ieyasu's attention, while Shonyu's troops took back roads and struck at Ieyasu's main castle.
Shonyu's army consisted of four corps:
First Corps: Ikeda Shonyu's six thousand men.
Second Corps: Mori Nagayoshi's three thousand men.
Third Corps: Hori Kyutaro's three thousand men.
Fourth Corps: Miyoshi Hidetsugu's eight thousand men.
The vanguard First and Second Corps naturally constituted the main strength of these forces—warriors who were ready for victory or death.
It was now the sixth day of the Fourth Month. Waiting until the dead of night, Shonyu's twenty thousand troops finally departed Inuyama in the utmost secrecy. The banners were lowered, the horses' hooves muted. Riding through the night, they met the dawn at Monoguruizaka.
The soldiers ate their provisions and had a short rest, then went on and made camp at the village of Kamijo, from which a reconnaissance party was sent out to Oteme Castle.
Earlier, the commander of the Blue Herons, Sanzo, had been sent by Shonyu to Morikawa Gonemon, the commander of castle, who had promised to betray Ieyasu. But now, just to make sure, Sanzo was sent out again.
Shonyu was now deep inside enemy territory. The army advanced, step by step, hourly approaching Ieyasu's main castle. Ieyasu, of course, was absent, as were all of his generals and soldiers, who had gone to the front lines at Mount Komaki. It was toward this vacant house, the empty cocoon that the core of the Tokugawa clan's home province had become, that Shonyu would aim his lethal blow.
The commander of Oteme Castle, who had been aligned with the Tokugawa, but tempted by Shonyu, had already accepted his pledge from Hideyoshi for a domain of fifty thousand bushels.
The castle gate was open, and its commander came out to greet the invaders himself, showing them the way. The samurai class under the old shogunate did not have a monopoly of immorality and degradation. Under Ieyasu's rule, both lord and retainer had eaten cold rice and gruel; they had fought battles; they had taken up the hoe, worked in the fields, and done piecework to survive. Finally they had overcome every hardship and had become strong enough to stand against Hideyoshi. Still, even here, there existed such samurai as Morikawa Gonemon.
"Well, General Gonemon," Shonyu said, his face aglow with happiness. "I'm grateful that you haven't gone back on your promise and have come out to greet us today. If everything turns out as planned, I'll send that proposal for fifty thousand bushels directly to Lord Hideyoshi."
"No, I already received Lord Hideyoshi's pledge last night."
With Gonemon's reply, Shonyu was once again surprised at Hideyoshi's vigilance and reliability.
The army now divided into three columns and started out for the plain of Nagakute. It passed another fortress, Iwasaki Castle, which was defended by only two hundred thirty soldiers.
"Leave it alone. A little castle like that hardly merits taking. Let's not play along the way."
Looking askance at the castle, both Shonyu and Nagayoshi rode by as though it was Not even dust in their eyes. But just as they were passing by, they were showered with gunfire from inside the castle, and one of the bullets grazed the flank of Shonyu's horse, horse reared, nearly throwing Shonyu from the saddle.
“What impudence!" Raising his whip, Shonyu shouted at the soldiers of the First Corps. "Finish off that little castle now!"