Thousands of miles away in the suburbs of Harbin, in the base of the 731 unit of the Kwantung Army in the back of the river, it can be said that the lights are bright and lively at this time, and for the members of the 731 unit in the base, tonight is undoubtedly a night worth celebrating. In the afternoon in the underground laboratory, Tabe Ban, who was in charge of studying the injury virus, tested more than 100 Chinese, North Koreans, and Russians for the new typhoid infection virus and smallpox virus, and the non-anesthetic dissection of more than 150 infected patients made dozens of researchers almost faint.

After observing and recording a large number of sick tissues, the people of the virus group found that the two viruses all met the actual combat standards, especially the mutated smallpox virus only took less than 48 hours from infection fever to incapacitation and death, and this smallpox mutant virus was extremely contagious, and an accidental researcher was infected with the abnormal No. 6 smallpox virus, and was personally ordered by Major General Masaji Kitano to throw the researcher into a high-temperature incinerator after being sedated.

As the commander of Unit 731, Masaji Kitano has a heavy responsibility, especially after the base of Unit 569 in Qiqihar was attacked by the anti-Japanese forces in China, Unit 731 became the only choice in this "extermination" special operation. The burden of the extermination plan ordered by Emperor Hirohito personally fell on the shoulders of Kitano Masaji, and Kitano Masaji, who took over the command of Unit 731 from Shiro Ishii, also felt great pressure.

Fortunately, after more than seven years of unremitting research, Unit 731 has studied seven viruses that have met the requirements of actual combat and has begun to carry out large-scale cultivation. In just one week, with the large number of cultivation tanks of Unit 731, it was able to cultivate enough viruses for combat, and then manufacture them into delivery carriers for actual combat. In order to celebrate this unprecedented success, Kitano Masaji took advantage of the privilege of Unit 731 to be subordinate to the General Staff Headquarters and the Kwantung Army, and obtained a batch of sake and meat to celebrate under such difficult conditions.

At the same time, thousands of miles away, Chongqing Airport was also a busy scene, with eight large transport planes and more than a dozen fighter planes parked on the airport runway, and hundreds of ground staff of the airport guard unit wearing national military uniforms were doing the final inspection of those planes. As the order issued by Zhao Zhi was conveyed in place, Yu Dazhi and Mo Lun, who received the order, began to be busy, and the 200 mercenaries who were selected by the scrambled organization were airlifted to Chongqing as soon as possible, and the weapons and equipment stored in the basement also arrived at Chongqing Airport almost at the same time, and it was this fighter team that landed at Chongqing Airport with them.

People in the Japanese style Zhao Zhi know that Zhao Zhi is a person who likes to plan and then act, and this operation will naturally be no exception, Zhao Zhi is not arrogant enough to let the carefully selected commandos enter the Northeast by land. In order to ensure that the 100 elite mercenaries selected in the end could land safely in the outer area of Harbin, Zhao Zhike mobilized half of the fighters of the current Thunder to help, and the fighter team docked at Chongqing Airport was only one of the teams, and Zhao Zhi had already transferred a large number of fighters to Taiyuan to wait.

This sortie guided the Sino-US joint air force to bomb the Japanese Kwantung Army's Unit 731 combat operation, which can be said to be a life-and-death operation, and Zhao Zhi will select the most elite general to form a new detachment to carry out operations against Unit 731.

For those so-called latest equipment, Zhao Zhi himself is also a little unsure in his heart, after all, those are manufactured and processed by the Americans according to the drawings, and then assembled and debugged in Kunming, Zhao Zhi, who has simply tested them, does not know much about the performance of this batch of new weapons and equipment. However, these things will not cause trouble for the mercenaries who have infiltrated the northeast.

Almost all those involved in the formulation of this plan knew that if the target of the night bomber was not a large facility, it would be difficult to accurately find the target in the vast northeastern plain of Yima Pingchuan without obvious terrain guidance. If the Japanese army attacks many times, it will definitely be vigilant, and it may force the other side to jump over the wall and start action immediately, so the night bombing requirements must be completed in one go. First, the ground forces find out the specific location of the target, and then, according to the radio navigation of the reconnaissance team, guide the bomber group to carry out a large-scale and all-out bombing of the target.

For this combat mission, Zhao Zhi also concentrated a total of more than 20 bombers of various types to participate in the operation, and taking away all the research materials of Unit 731 was the main purpose of Zhao Zhi's trip, but there were also Soviet people involved, so Zhao Zhi could not leave a handle for them, and the research station of Unit 731 must be bombed into ruins, otherwise the Soviets would know that Zhao Zhi took away those research materials.

Zhao Zhi's plan was for the fighter unit to take Outer Mongolia around to the outskirts of Harbin, and a transport plane team with 100 mercenaries who had set off in advance would prepare spare fuel to carry out the airborne landing in advance, find a temporary landing site for the fighter unit in Outer Mongolia, and prepare for the refueling of the returning aircraft group. The size of the assault team under Zhao Zhi's personal command was set at about 100 people, and only half of the 200 mercenaries sent by Yu Dazhi from Mandalay could follow Zhao Zhi into the northeast battlefield, and the other mercenaries were only responsible for the temporary airport guard and the task of receiving the retreating troops.

The military commanders also have intelligence points in Harbin, and no less than 100 intelligence officers of the military commanders are active in Harbin, and these intelligence officers of the military commanders are Zhao Zhi's main helpers. After the airborne, all the intelligence sources had to rely on them, as well as the clothes needed by the civilians, the trucks for marching and evacuation, and the military commanders had to prepare them, and in addition, after receiving the signal, the military commanders had to use the hand-thrown incendiary bombs provided by Zhao Zhi to guide the bombers out of the Japanese barracks.

In the two days from getting the relevant information to the mercenaries rushing to Chongqing, Zhao Zhi formulated at least 6 different plans for the sand table, and with the increase in information sent by the military commanders, Zhao Zhi deleted 5 of them after repeated thinking, and finally only kept the current plan, and it has been approved by Chiang Kai-shek. The plane was about to take off, and all the preparations had been completed, and Zhao Zhi, who had been hanging his heart, secretly breathed a sigh of relief.

After all, this was an extremely dangerous combat operation, and going deep into the rear of the Japanese army and returning on its own without direct support was a formidable challenge for any special operations unit. And this time Thunder will face the famous Japanese Kwantung Army, and even Zhao Zhi is not too sure of his own heart. A speeding group of trucks spewed black smoke into the airport, and dozens of soldiers in national army uniforms jumped out of the carriages, and they carried some canned food and compressed biscuits from the carriages, which were the rations of Zhao Zhi and their road rations.

After the troops gathered, the number of people and equipment were counted, and what gave Zhao Zhi a headache was the steel plate of the 12 sets of steel fortresses that Yu Dazhi transported with the mixed secretary, which did not occupy a large space, but the weight of that thing was not small. The car was loaded with more ammunition and bombs, and the superfluous things and facilities in the bombers and transport planes were removed, and instead they were stuffed with full ammunition and bombs.

"Sir, the brethren are ready, it's time for us to go." Zhao Zhi, who was standing on the airport runway and bowing his head in contemplation, was awakened by Yan Wudao, and 100 mercenaries who were ready to go stood neatly behind Yan Wudao, everyone's eyes flashing fiercely. These people are the elite selected by Yu Dazhi from thousands of mercenaries, and each of them knows the danger of this mission, but none of them said that they will withdraw from this operation, not to mention that Zhao Zhidu personally led the team to command this operation.

Turning around and waving goodbye to Dai Li and the others who came to see them off, Zhao Zhi waved his head to signal boarding and leaving, there were no superfluous words and no tragedy and excitement before the war, and the mercenaries, including Zhao Zhi, just silently boarded the transport plane to prepare for the plane to take off. "Boyuan, you must come back alive, you kid still owes me a drink and didn't invite, if you dare to repay the debt, I will never let you go." Dai Li, who came to see him off but had been standing more than ten meters away from Zhao Zhi, suddenly shouted at the top of his voice, Dai Li, who has always disliked to talk and pay attention to his image, made such a move, which made Zhao Zhi's heart warm, but he just raised his arm and shook it, but he never turned back.

"Brother, you must come back." Looking at Zhao Zhi's slowly disappearing back, Dai Li, at this time, had already lost his former calmness, not only standing on the side of the car muttering to himself, but even there was already a layer of fog in his eyes. Dai Li is the big man in charge of intelligence around Chiang Kai-shek, why Zhao Zhi suddenly mobilized so many planes and mercenaries to go out at night, Dai Li is naturally clear, but he can't understand why Zhao Zhi agreed to the Soviet ** son to bomb the camp of the Kwantung Army in Harbin. If it was just an attack on the station of Unit 731, it would be okay to say, but if the Kwantung Army was forced to be in a hurry, Zhao Zhi, who only had 100 mercenaries around him, would not be able to come back.

"Gentlemen, welcome to the flight of Thunder Airlines, I am your captain Buckley this time, we are leaving Chongqing Airport now, and the plane will fly to the temporary base in Outer Mongolia for a short stay to replenish fuel. If you get bored, you can look out the window, if someone gets motion sick, you can find a vomit bag under your seat, I hope you all fasten your seatbelts, and finally wish you all a happy sailing. The transport plane began to taxi slowly on the runway, and Zhao Zhi's landline sounded the funny voice of the pilot Barkley, which made everyone laugh, and the depression in their hearts was diluted a lot.