At 1:55 a.m., it was the moment of silence, two uninvited guests over the British Isles fell from the sky, they were the first batch of people to land in Britain - the commando was originally called Skorzny Commando, and after Ranke joined, Skorzny wanted to change its name to Ranke Commando, and the two humbled for a long time, and finally agreed to name it after Thunder Commando.

The two parachuted from the air almost at the same time, but fortunately the wind was not strong that night, otherwise even if they blew a little distance in the air, they would most likely be separated by a distance of more than ten kilometers when they landed. Randolph landed first on a freshly plowed dirt field, where he threw a big heel and a solid pig gnawing on the mud, and after a long time he released his parachute, crawled out of his mud-covered flight suit and buried them, slipped his revolver into his pocket, and searched for maps and flashlights, as well as vital radio accessories.

Almost at the same time as he landed, Schubert landed in a forest, and he did not fall like a pig gnawed on the mud like Randolph, but was hung upside down from the branch by an umbrella, and it took a lot of effort to roll over from the tree. He carried with him the same thing as his companions, and he first tried to use his flashlight to light up a blink of an eye in the thick of the night, and then determined his approximate position, and he called out in his heart: Great Britain, I am coming!

The task of Randolph and Schubert was clear: to be the first to converge to complete the preliminary survey, and then call the country, and then the two of them would design a reasonable route and method to receive the main landing of the commando. After a lot of twists and turns, after many times of playing bird calls and other animal calls to communicate with each other. The two finally met at dawn and quickly found shelter. They first need to assemble the radio station and report the successful landing to the country, and then they have two days to complete all the work and finally ensure that the plan is effectively implemented.

The infiltration of Randolph and Schubert actually came at a good time. If, at the beginning of the Great War and the British Isles were facing a large-scale German landing, they might have encountered an endless stream of patrols when they landed at night, the nerves of British counter-espionage were far tighter than they are now. Records and reports from police stations everywhere showed that German spies were everywhere and elusive, and the influx of information drove people crazy: strange people, flickering lights at night, burning haystacks, suspicious neighbors hearing strange banging on the walls. An energetic amateur reported that he saw a man with a German neck, Wilhelm? Powell, who had been the head of the British Boy Scouts, insisted that he could be concluded to be a German spy by walking alone.

At the moment when the German invasion of Britain was in full swing in 1940. This suspicion and the constant stream of reports left the police and gendarmerie scrambling to deal with it, involving a great deal of energy, manpower, and material resources, but by 1941 and even 1942, the exhausted police departments had paid little attention to this cliché. The public also seems to have lost interest in catching spies. Because 99.999% of what they saw and reported was basically false after verification. The system of night patrols is still in place, but at best it is a routine practice. The British generally believed that the German threat had passed, and that it was now the Germans who were worried about British spy infiltration.

This is clear when you think about it on your toes: it is not easy to train a spy, how can the Germans throw spies at will like throwing cabbage at will? Moreover, since the British used super-secret to crack the German code, MI5 is more confident about counterintelligence, and anyone who infiltrates the British Isles will use the telegraph in advance to inform the reception personnel who have been lurking in the UK before the war, and they only need to wait and wait at the predetermined location. They had no idea that the Thunderbolts would venture out to carry out direct infiltration on their own, regardless of their connection with the British undercover spies, and that their German counterparts would use a completely different radio cipher - not the enigma cipher that had been layered with layers of encryption. Instead, it is connected by telegram at the level of ordinary civilian ciphers, which is almost the same as a clear code. Frequencies are also fixed commercial frequencies and are only sent during daylight hours. This perverse mode of thinking easily deceived the listeners, who dismissed it as a normal telegraph exchange between Britain and the Continent.

Randolph and Schubert, after hard work, designed a reasonable line according to the original plan earlier than planned, and then sent a telegram to the country, answering them with only two simple words: Received!

At nightfall on 30 September, the naval submarine laden with the Sky Thunder Commandos slowly sailed out of the secret cave of the U-boat near the Belgian coast, where they would spend nearly 20 hours at sea before arriving at the nearest point to Clacton de Mer on the east coast of England the following night. Crossing the English Channel in wartime was an almost impossible task, so the commandos chose a very prudent approach: they would remain afloat all the way out of the continent, then dive after entering dangerous areas, and finally float and release personnel when approaching the British coast.

This is a special submarine modified from a supply submarine of the XIV type, with a surface displacement of 1695 tons and an underwater displacement of 1963 tons, which is the largest tonnage submarine in General Dönitz's Seawolf unit. It was not equipped with torpedoes or deck guns, but only a small number of anti-aircraft cannons, and could carry 400 tons of fuel oil, four torpedoes and fresh food when acting as a submarine cow, as well as a bakery to make fresh bread for the supply boats. The specially modified submarine is large enough to transport a team of about 50 people, and the submarine is full of equipment and supplies needed by the commandos, and most importantly, the eight sets of positioning devices, which are the only ones that can successfully bomb the aircraft.

"Sir, we have received a telegram from the pathfinders before we set out, they have not only successfully landed, but also found a relatively hidden rest spot, and they have completed the field survey according to the plan and are ready to respond." In the noisy environment of the submarine, Skorzny had to raise his voice to speak.

"Is there a chance that they will fail?"

"Not usually, and even if they fail, we'll have to land to complete this mission, at most take a little more risk."

"I believe in their luck and ability, and we will definitely be able to get the job done." Ranke nodded and asked, "What's the follow-up?" ”

"On the first night we detached from the submarine in a kayak and landed successfully with the Pathfinder; We will take advantage of the darkness to get enough transportation and quickly advance to our destination. In the following daylight hours......" said Skorzny, pointing to the map, "it would take about 200 kilometers to get from the landing port to the target, and we would need to play the role of a British unit and make a quick crossing." As this is the heart of the UK, we must not show our feet during the journey, otherwise we will be finished......"

"Don't worry, I've lived in Cambridgeshire for a long time, I'm familiar with this place, and I'll get you to your destination safely."

"That's good." Skorzny continued, "Once we arrived at our destination, our task was to control the situation and start installing the positioning devices, so that there could be no movement in the process, especially not to get the target population to notice, and if they evacuated or called the police, even if we bombed it, it would not help." ”

"I see." Ranke asked, "What about the retreat path?" ”

"We can't go back the way we came, we have to retreat to the northeast overnight, where the submarine will meet us. During the day, when we were heading to the combat destination, he would make a deep dive and find a place to lurk - the boat could dive to a maximum of more than 200 meters, and as long as he did not make a sound and did not try to attack the enemy, the enemy would generally not be able to find it. "But we don't have to go back immediately after getting on the submarine, we need to make a detour in other directions first, so as not to be intercepted by the British." ”

"You've thought it through, so let's do it."

As Skorzner explains, Clarkton de Mar was just the initial base for the Thunderbolts, and their ultimate destination was Bletchley Manor, a manor house in the town of Bletchley in Milton-Keynes, Milton-Keynes, in the middle of England, which houses an ancient building that blends Victorian Gothic, Tudor and Dutch Baroque. The estate covers an area of 235 hectares and was ready to be sold to a developer for real estate construction after the death of its original owners, Sir Lyon and his wife. But Admiral Sir Hugh-Sinclair, the head of MI6 and a former director of naval intelligence, fell in love with the estate, and after lobbying the government to no avail, he bought the entire estate out of his own pocket for £7,500.

The estate is located along the Varsity-Line, a train line connecting the Universities of Oxford and Cambridge, not far from Bletchley Station, where mathematics and cryptography experts from both universities can easily reach by train. At the same time, the nearby communication and road transportation are relatively convenient, which is also the main consideration of Sir Sinclair when he bought this place.

On August 15, 1939, the British Cryptography School, founded by Sir Sinclair, was the first to move here, and the Admiralty, Military and Air Departments all occupied the ground floor, while the top floor was occupied by MI6. In the early days of the establishments, the pre-conceived resort-like wooden huts had not yet been built, so the staff were forced to live in stables and adjacent farmhouses, which were later improved when small cabins were erected. (To be continued.) )