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Chapter 79, Changjin Lake

North Korea's east coast, Xingnan port.

The blunt and thick bow of the tank landing ship split the ice floes on the sea surface, and leaned against the Xingnan Port Wharf.The first door opened, and the M3 half-track armored vehicle dragged a 155mm howitzer out of the belly of the landing ship, trying to drive onto the road at the dock.

Landing ships, landing craft, ro-ro ships, transport ships, plus two small port icebreakers on standby in the port, the entire Xingnan Port is full of steam, and all berths are busy for the first division of the US Marine Corps to go ashore.

The 1941st Marine Division, nicknamed the "Old Blood", traces its history back to the 1950st Company of the Marine Corps, the only full-time regular army during the American Revolutionary War.The First Marine Division was formally established in 3. It has gone through the battles of Guadalcanal, Gloucester Point, Peleliu Island, and Okinawa, from Australia to Dagu, Tianjin.Due to Guadalcanal's illustrious military exploits, everyone in the First Marine Division has the words "GUADALCANAL" on their armbands. In 1, the First Marine Division had 1 Marine Regiments, 2 Artillery Regiment, 2 Independent Tank Battalion, 1 Armored Reconnaissance Battalions, [-] Engineer Battalions, and [-] Amphibious Assault Battalion. All told, there are more people than a division of the U.S. Army.

The soldiers of the 5st Battalion of the 1th Marine Regiment stepped off the ro-ro ship, and the oncoming cold wind made all the soldiers shrink their necks.

"God, are we heading to hell?"

"I miss New Orleans so much..."

In the past two months, soldiers of the 10st Marine Division have been fighting all over the Korean peninsula.First it was the Pusan ​​defensive circle, then landed on the coast of Incheon in the autumn wind, then circled a big bay, and landed again at Wonsan. On October 25th, MacArthur believed that the Korean War was coming to an end, so he sent the [-]st Marine Division on the ship from Wonsan to prepare to return to the country for rest, but was called back halfway through the ship, and spent several days at sea, finally at a place further north than Wonsan. Xingnan Port disembarked.

The task given to the 10st Marine Division by the commander of the [-]th Army, Almond, was to let him advance from Xingnan to the north and then turn to the northwest to attack and cut off the vital Manpu Town-Jiangjie-Xichuan supply line of the Volunteers.

Oliver Prince Smith, the commander of the 6st Marine Division, looked at the thermometer outside the jeep.At 15 o'clock in the evening, the temperature outside the car had dropped to -[-]°C.

The huge fleet unloaded 9000 people, 1800 vehicles of various types, and 2 tons of supplies at Xingnan Port. Every day since then, the United Nations Army has transported at least 7 tons of supplies from Xingnan Port. Support here The [-]st Marine Division, the [-]th Meibu Division and the two South Korean divisions fought.

"I'm telling you! There can't be a more difficult winter than the Bulge!" In the motorized march of the 7th Marine Regiment, a veteran who participated in World War II and is now enlisted for the second time told a story to the soldiers around him , "The winter of 1944 was also extremely cold. The Germans cut off our retreat, and we were forced to hide in the snow and forests, always facing the King Tiger tanks and the assault guns of the Armed Guards. It was a full three A week of hell..."

Corporal Leon Poch of the Marine Corps wrapped his coat tightly and listened to the veteran who was several years older than him tell his glorious history. His eyes looked out at this strange wilderness through the cracks in the hood of the truck.Boqi is from Iowa, and there is snow in his hometown. The coldest winter is January, which is about the same temperature as Xingnan Port now.But it's only early November...

The 7th Marine Regiment and the 5th Marine Regiment, as the vanguard, left the Xingnan Port area and marched northward along the road.

The vanguard of the 7st Marine Division happened to be on the same road as the 32nd Infantry Regiment, the last infantry regiment to set off from the 32th US Infantry Division. The 10nd Regiment is in a state of extreme excitement at the moment. They have just defeated a large group of Korean People's Army troops a week ago-maybe half a division or even two-thirds of a division. At the end of October, there can still be such a large People's Army It's not easy to get together, the Seventh Division of Meibu couldn't mention how happy they were when they got the head.Across the tarpaulins of the two trucks, the commander of the 7th Marine Regiment seemed to be able to hear the silly soldiers of the [-]th Meibu Division singing at the top of their voices.

The commander of the regiment drooped the corners of his mouth, and there was no smile on his face as usual.The commander also rolled in the mud of Guadalcanal Island, slept in a pile of mosquitoes, and was beaten severely by the devils in the tunnels.The commander also knew that if he rushed slowly, he might not be able to receive a box lunch.

Passing through a small open plain, the commander waved to the company commander of F company beside him. The company commander understood and used the walkie-talkie to notify the vehicles behind.After a while, a half-track and three trucks left the convoy and headed for the flats beside the road.

The 9 squads of Company F were ordered to set up a road every 5 or 6 kilometers from Hamxing City to the north, and set up a series of secret (not to let the U.S. Army know) supply stations, each supply station Some fuel oil, heating stoves, medicines, food were stored.This is completely the commander's habitual operation. Although I don't know what the future battle will be like, it is always right to prepare more.

Series Ann.

"Snow! So much snow!"

The 9 divisions of the 10th Corps entered North Korea from Ji'an, and they were greeted by heavy snow that would never be seen in Jiangnan.Walking on the uneven snow-covered country road in the dark night, every soldier could feel the large flakes of snow falling on his face, body, and gun barrel.Occasionally, with the light of a flashlight or lantern, you can see dense hexagonal snowflakes swaying and falling in the sky.

At 5 o'clock in the morning, after marching overnight, the 20th Division of the 58th Army had penetrated 20 kilometers into North Korea.In front is a large forest covered in silver. Look at the time, the sky is about to shine, it is time to stop and camp.

"Are we just sleeping in the snow?" the soldiers of the 58th Division said in horror.

"Yes, we're going to dig a snow cave on the ground." Nearly a hundred Korean People's Army comrades and local cadres came to support them. They were assigned to each company of the Volunteer Army and taught Chinese comrades to adapt to the winter environment.

"Just like that, shovel up the snow and pile it on the windward side to form a semi-enclosed circle," the comrades of the Korean People's Army opened the folding shovel and taught the soldiers of the 20th Army how to build snow nests. "Then spread out the bedding, that is, the sleeping bag. Note that you must take off your shoes and socks before going to bed, and wipe your feet vigorously with snow before getting in to sleep."

The soldiers followed suit, and after building the snow nest, they took off their shoes tremblingly. "Comrade North Korea, do you really wipe your feet with snow?"

"Yes! This way your blood will be smoother!"

In the early morning of this day, Zhang Xiangyi, the commander of the 20th Army, saw that the thermometer had dropped to minus 21°C.At that time in Shenyang, the daytime temperature was still above zero. Unexpectedly, starting from Shenyang, the parallel latitude line moved eastward for 21 kilometers, and a -[-]°C came down.

9兵团在山东特地加强过，每个军下辖4个师，接到命令后全兵团有11个师北上——26军78师装备两栖坦克的攻台作战师，不适合带到朝鲜。从集安进入朝鲜的有10个师、12万人。

After the headquarters was established, Zhang Xiangyi received a telegram from Zhisi to the Corps Headquarters and transferred to the Army Headquarters. Two US divisions were attacking from Xingnan Port to the northwest. Now the 2th Division of the 42nd Army is blocking the vanguard of the US Army, the 124th Corps To continue to advance through the snow, after they enter the designated combat area, the 9th Division will loosen the blocking line, put the two US divisions inland, and then hand them over to the 124th Corps.

Entering North Korea for the first time, the environment is unfamiliar, the logistics supply line is intermittent, the US military's high-intensity air strikes, and the severe cold climate.For the 9th Corps, this battle is undoubtedly the rhythm of "the big exam at the beginning of school".

According to the method of the guide of the Korean People's Army, he took a handful of snow and wiped his feet indiscriminately, and the little soldier grinned and got into the snow nest.

"It's so cold."

……

50 centers.

"I figured it out, I figured it out." Li Qiang's jeep returned from the first-line listening station and drove directly into the garage of the 50 Center without stopping.As soon as he walked into the supercomputing room, Li Qiang yelled, "Before, the listening station concentrated the listening frequency bands on the short wave, and listened to the frequency bands of the tactical radio stations of the U.S. ground forces, but the medium waves were ignored. Most of the long-range radio stations on U.S. warships are Medium wave. Now that I've adjusted, the listening station can pick up medium wave telegrams."

"Li Qiang, during the day you left, we heard the call signs of many radio stations in the direction of Xingnan." Wang Yongjun said, "Short wave."

"Not unlocked yet? Is it a new system? A new key?" Li Qiang guessed.

"It's not a new system. The listening station may have intercepted the activities of these radio groups before, and now the key has been changed." Wang Yongjun picked up a stack of telegrams in his hand, "The Yankees are really interesting, Army, Navy, Navy The Marine Corps uses the same cipher machine, but uses different keys. According to this situation, if their Marine Corps regiment level has information, it must report it to the Marine Corps Command Team of the Army Group, and the command team will pass the information on again. Distributed to the army of the group army, the army sends this telegram to the army unit again with their own code, so that the information can be shared between the army and the marines... well, if you americans don't take the trouble, then neither do I trouble."

Behind Wang Yongjun, the TC50 supercomputer is running at full speed, and the ventilation and cooling system is "humming" to discharge the hot air out of the cavern.

……

Beijing.general staff.

"In the past 24 hours, there have been a lot of signs of wireless communication in Xingnan Port! This is the communication station of the US Marine Corps. After the Wonsan landing, the Marine Corps replaced the key of M-209. Fortunately, the 50 center went smoothly two hours ago. cracked it."

The time was urgent, and a large number of deciphered telegrams sent by the 50th Center had not been sorted out. There were division-level communication telegrams, regimental-level communication telegrams, and even telegrams sent by battalion-level commanders using vehicle radios.Li Kenong worked quickly with his hands and eyes, quickly sorted the telegrams into categories, and divided them into three stacks according to their level.

"The first division of the U.S. Marine Corps disembarked at Xingnan." Li Kenong finished sorting out the telegram and reported to the chairman and Nie Shuai, "All three marine regiments of the first marine division have disembarked. The 5th Marine Regiment, the 7th Marine Regiment The regiment, the 1st Light Armored Reconnaissance Battalion, and the 3rd Combat Engineer Battalion are about to set off to the north. Their division headquarters ordered that the 7th Marine Regiment should break through the defense of the Volunteers in front of them as soon as possible, occupy Gutuli on November 11, and then go down Attack and advance in Jieyu."

"The deployment of the Americans on the east and west fronts can now be seen clearly," the chairman pointed to the map of North Korea. "One way is slow advance, and the other is aggressive. The US troops on both sides are not good at it."

“当面志愿军是124师。”聂帅敲敲地图上124师的阻击线，“124师已经在和美步7师32团作战。陆战7团加入战斗之后，可能124师要逐步撤退了。那么，9兵团什么时候可以赶到？”

"The location of the 9th Corps is here," Li Kenong pointed out to the chairman and Nie Shuai. "The weather is cold and there are air strikes. We need to march at night, and the speed of marching cannot be fast. If the 124th Division completes the blockade as scheduled and retreats slowly, the US military please After the 124th Division's blockade, advance at the expected speed, then the 9th Corps will probably be here to fight the [-]st Marine Division and the [-]th US Army Division."

"Changjin Lake."

Chapter 80, anti-aircraft missiles are about to be finalized

Liumei Institute (Beijing Computer Institute).

Lu Xiaopeng watched the film for a day at the computer institute, and came to his first conclusion after returning to China: it was not the problem of the missile that the missile hit the upper left, but the problem was with the fire control computer or software.In the next three days, Lao Lu asked the project team to disassemble the computer, holding the blueprint of the transistor computer in one hand and the program code in the other, to check one by one which part of the process the error occurred in.

There are about three places that the fire control computer needs to check: hardware, software, and aerodynamic parameters of the missile.The aerodynamic parameters are the result of the wind test that Lao Lu took the model to Mikoyan himself, and he couldn't be more clear about it.Hardware and software... Old Lu has to learn by now.

The program is not some ancestral code, and it has only been more than a month since its birth.The project team sorted out the research and development documents, and copied them down on five pages, full of 0s and 1s and strange symbols.Lao Peng is an aeronautical engineer who has worked in the design of McDonnell Aircraft Company, but no matter whether he works at McDonnell or studies in Mikoyan, he has never seen a designer carry out a design with a big iron box.

Oh, I'm not designing an airplane now, I'm designing something to hit-fly-plane...

"Xiao Zhang, I think it is the numerical calculation of this place, the formula used is wrong."

Lao Lu pointed to the formulas listed next to the five pages of code written by the project team.On the third page, he wrote down the current algorithm in black ink, and wrote a new formula next to it in red pen.

"Oh, I understand, Mr. Lu." Team leader Zhang Jue understood the formula written by Lao Lu, pulled the input machine over, connected it to the fire control computer and began to modify it.After about half an hour, the fire control computer was "flashed". Zhang Jue moved the oscilloscope over and plugged in the test input and output.

"Minister Tang, the project team and I have re-adjusted and revised the fire control computer, which probably solved the problem." After solving the problem, Lao Lu called Tang Hua at the computer office.