Ogawa participated in a total of two rounds of diagram deduction in the secret room of the Naval University.

In the first round, the red side (U.S. forces) sank 4 battleships and severely damaged 1; 2 enemy aircraft carriers were sunk and 1 was heavily damaged; The loss of aircraft was about 190 units. Two aircraft carriers were sunk, two were heavily damaged, and 127 aircraft were lost. Decide that the attack failed.

In the second round, 3 battleships were sunk and 1 was heavily damaged; 2 aircraft carriers were sunk and 1 was heavily damaged; 3 cruisers were sunk and 3 were heavily damaged; 130 aircraft were lost, of which 80 were destroyed on the ground. The Blue side suffered only minor losses and managed to evacuate. The attack was determined to have been successful.

Although the results of the two rounds of deduction are completely different, the doubts about the "Plan Z" have not diminished in the slightest. Because everyone can see that the biggest difference between the two rounds of deduction is that the previous round judged that the oil leaked by the Red patrol plane and the Blue Army submarine was only put on alert in advance. That is, the suddenness of the attack is an absolute necessity to determine the success of the plan.

However, it was not easy for the Combined Fleet to sail 3,000 nautical miles from mainland China to attack Pearl Harbor on the other side of the Pacific Ocean. This is not enough to grasp the US troops' flight patrols, ship mooring, anti-aircraft firepower, and so on at Pearl Harbor, and any problem in any link of the combined fleet's assembly and march may cause the plan to be exposed.

"I am categorically opposed to this plan." Among the generals present, the strongest opposition was Vice Admiral Nagumo Tadaichi, commander of the 1st Air Force. As the concrete executor of the plan, Nagumo's opposition is undoubtedly more lethal.

"With the current situation becoming increasingly tense, it is difficult to say whether the U.S. fleet will remain in Pearl Harbor at that time. Moreover, the patrol planes of the US military bases on the islands of the Pacific are also heavily guarded, and it is almost impossible to pass through the enemy's alert without being detected. As long as we are discovered by an enemy plane or a submarine, we will inevitably be blocked, and the battle will inevitably be frustrated. This will not only affect the southern front, but also lead to the entire war situation falling into an embarrassing situation out of control. ”

"I agree with Commander Nagumo." Rear Admiral Takijiro Onishi, one of the planners, also felt that Yamamoto's plan had escaped risk, "Although I participated in the development of the plan, I was firmly opposed to the implementation of the plan. It is okay for Japan to attack the Philippines or other U.S.-occupied territories such as Guam and Wake Island, but it is too dangerous to attack Pearl Harbor. ”

"I fully agree with this battle plan." Speaking strongly in support of Isoroku Yamamoto was Lieutenant General Tabun Yamaguchi, commander of the 2nd Air Force. Yamaguchi's resume is similar to that of Yamamoto, both of whom studied at American universities, one at Harvard and the other at Princeton, and both served as military attachés in the U.S. Embassy.

Therefore, unlike those big ships and gunners in the navy who blindly believe that "the Imperial Army is invincible," Yamaguchi is well aware of the disparity in national strength between the United States and Japan, and understands that only by striking first and killing the other side at the beginning of the war can he have a glimmer of life.

"As Chief Nagumo said, there is no doubt that the battle for Pearl Harbor was indeed risky. However, if we concentrate only on the south, the U.S. Pacific Fleet will inevitably attack our southward flank, and the security of the homeland cannot be guaranteed. At that point, we will be under attack, and the situation will be difficult to manage. Only by giving free rein to annihilating the main force of the US Pacific Fleet in one battle can we ensure the smooth advance of the south and ensure the security of the homeland. I resolutely supported the attack on Pearl Harbor and did not hesitate to die in the line of duty! ”

Yamaguchi was known in the navy as "the admiral of admirals," and his tough stance won the support of the young staff officers present. With the addition of the young Zhuang faction such as Kuroshima Kameto and Minoru Genda, the discussion in the conference room became full of gunpowder for a while.

As an "outsider", Ogawa had no intention of intervening in the internal disputes of the Combined Fleet. But as the commander-in-chief of the deduction side, there was no reason to get out immediately, so he could only sit there awkwardly, listening to everyone's speeches and pondering the way of it.

At first, Ogawa wondered why Yamamoto had left Lieutenant General Tabun Yamaguchi, who supported the "Plan Z", not in use, but chose Tadaichi Nagumo, who opposed the plan, as the commander-in-chief of the operation.

Later, after listening to the many details of the plan, he realized that it was clear that the key to the success or failure of "Plan Z" was not how to drop bombs on the enemy's head, but how to allow the huge fleet to secretly sail to the attack position and return safely after the attack.

Although Yamaguchi was the Japanese Navy's premier aviation expert, he was recognized within the Navy as the best successor to Yamamoto Isoroku. But to command the fleet to quietly cross the ocean, Yamaguchi is obviously not as reliable as Vice Admiral Nagumo Tadaichi, the former president of the Naval University and a well-known navigation expert.

However, even if Nagumo Tadaichi's seafaring ability value is off the charts, it is difficult to guarantee the success of the operation. There are so many uncertainties in this, and the more Ogawa thinks about it, the more uneasy he feels. I can't complain that Vice Minister Ito said that Yamamoto 56 is "gambling heavy", and the risk factor of "Plan Z" is too high.

But then again, the three books and fifty-six gambling addictions are well known in the navy. Sometimes, when he couldn't find a gambling game, he played a child's paper horse race with someone.

Yamamoto famously said, "A man who doesn't bet can't be a man, and a man who doesn't bet can't have a big deal." And believe that the so-called betting is a game in which both parties have their own opinions and disputes when they encounter a certain problem, they bet some bets and force themselves to be responsible for their own actions or opinions.

Strange to say, perhaps because Yamamoto Isoroku's observation and judgment are different from ordinary people, his gambling luck has always been very good. He is proficient in everything related to gambling, such as Go, shogi, mahjong, cards, billiards, baseball, roulette, etc. He himself once triumphantly boasted that if the emperor gave him a year, he could win back a battleship for the Japanese Navy.

Of course, battleships or something were bragging, but Yamamoto did subsidize naval expenses with money won from gambling. In 1923, when Isoroku Yamamoto was visiting seven countries in Europe and the United States with Admiral Kenji Inoue, a member of the Navy Counselor, a delegation was planning a banquet, but the funds were insufficient. As a result, Yamamoto volunteered to enter the local casino and won back the insufficient fee in one night.

Ogawa also heard that the famous Monte Carlo Casino in Monaco was even banned from Yamamoto because he won too much money (there are only two Japanese who have won this "honor" in history, and the other is a genius agent during the Russo-Japanese War, and General Genjiro Akashi, who claims that one person can reach ten divisions).

I hope that Admiral Yamamoto's good luck will once again work on "Plan Z", Ogawa sighed secretly.

While Ogawa was thinking nonsense, Yamamoto Isoroku, who had been listening to everyone's argument with his eyes closed, finally spoke: "Listen to me," Yamamoto's voice was not loud, but the voices around him stopped instantly, "I have heard everyone's opinions on the Pearl Harbor operation." My opinion is that as long as I remain commander of the Combined Fleet, this battle must be fought. ”

In the silence, Yamamoto continued, "As you know, I have always been against fighting the United States. If the authorities insist on fighting, there is no other way to preemptively attack and destroy the main forces of the other side in one fell swoop, so that they will not be able to participate in the operation in the western Pacific for half a year or a year. ”

After a slight pause, Yamamoto said word by word: "If the Military Command Department cannot agree to this battle plan, I will not hesitate to resign from the post of commander of the Combined Fleet." ”

Before everyone present could recover from the shock, Yamamoto slowly turned his head to Nagumo Tadaichi, looked directly into Nagumo's eyes for a long time, and then said calmly: "If General Nagumo disagrees with this, then please personally lead the aircraft carrier fleet to Pearl Harbor!" ”

Don't look at the mountain itself, which is only 1.59 meters high, but in the Japanese Navy, it is undoubtedly "the white jade pillar of the sky and the purple gold beam of the sea". He suddenly made such a tough statement, not to mention the subordinates of the Combined Fleet, and even the officers of the Military Command Department who were listening were panicked. Major General Fukuru Shigeru, the chief of operations of the Military Command Department, who could not be the master, had no choice but to announce the suspension of the exercise and report the results to Chief Nagano and Vice Minister Ito.

Although at that time, Ogawa Osa was also shocked by Yamamoto Isoroku's determination and vow. But as soon as he walked out of the secret room, he put the matter behind him for the time being.

Whether or not the "Plan Z" can be implemented in the end will still have to be submitted to the emperor to wait for the judgment. So this problem is not something that Ogawa and Osaku should worry about.

Today's diagram is just a coincidence, and it is the right way to focus on intelligence gathering against the United States, Britain, and the Netherlands. Especially for the infiltration of Hughes Aircraft Company, it is better to come up with a way as soon as possible.

Within two days, a report from Tianjin, China, revealed the secret of the Army's intelligence unit's successful infiltration into Hughes Aircraft.