In a dimly lit space, Prien, the captain of the German Navy's legendary submarine, was sitting in his one-bed lounge. The folded table had been folded in by him, and he was lying on his back on the bed, feeling the rhythmic roar of the submarine machinery.

The German naval blockade of Iceland never stopped, with backward submarines secretly laying mines in the waters off Iceland, and advanced new submarines being responsible for rounding up ships trying to send supplies to Iceland.

The long and boring underwater life is far less romantic than one might think, after all, the Allies have begun to use a full escort system to barely maintain the outpost of Iceland at this time. In this case, it was difficult for the submarine to find an opportunity to float and recharge, which limited the combat intensity of German submarines in the waters of this area.

Prion hadn't shaved for days, and the blue stubble on his slightly emaciated face made him look like a savage, but he was used to it, because he had long ignored his sloppiness in the German submarine forces.

After all, compared to life, the slightest flaw in the meter is nothing at all. Besides, there are no pretty girls on this kind of closed sea, who will show them if they are packed up decently? Most of the time the lights of the submarine are turned off, and who cares if there are some oil stains on their bodies?

"Sir!" the adjutant on duty lowered his voice and called out to Prion through the thin curtain of covering. Prion, who had not slept at all, immediately rolled over and pulled back the curtains.

"Another flotilla drove over, there was a sonar detection signal, and there were quite a few escort ships. "The adjutant on duty reports the information he has. Carrying out a mission in such dangerous waters, there were not many submarine commanders in the entire German army who had such courage. However, the risk is greater, and the harvest is naturally greater, so they now have first-hand intelligence information.

Prien was stunned for a moment, then touched his chin full of stubble with his hand, and frowned a little puzzled: "Such a frequent fleet, and it is all gathered a large number of anti-submarine escorts...... They're sending something to the island, and we'll have to inform headquarters of this intensity. ”

"Adjust the course, 44 degrees to the east! Prien threw his leather jacket over himself and jumped out of bed and followed the adjutant on duty to the submarine's command room. The sonar soldier was holding on to his headset, and the roar of the engines coming from the fleet above the ship looked like there were quite a few ships.

"Adjust the course to the east, turn the rudder 44 degrees, and get out of this body of water as soon as possible. The adjutant on duty gave the helmsman the order to get out of here, and the helmsman nodded, and then began to adjust the direction of the rudder on the submarine. The submarine steered slowly in the depths of the sea, like a giant shark waiting for an opportunity to pounce on its target.

They only have one torpedo left, which needs to be replenished urgently, and the standby here is only a temporary evasion from these frequently passing American merchant fleets. So from the very beginning they did not intend to attack, but only dodged and observed. Now they were going to leave, because they had to find a safe place to float and send what they saw back to the submarine headquarters far away in France.

In the formation of surface ships, the sonar man on one of the destroyers frowned, and he heard a strange sound in the water, not the sound of nature, which sounded like ...... It's like a submarine adjusting its course.

"What did you find?" the nervous officer, standing beside the sonarman, asked in a slightly stuttering tone. He didn't want to encounter those legendary German submarines, and it would be a nightmare to hear from his comrades who had met them.

"It looked like a submarine, but I didn't hear anything else, they didn't fire torpedoes...... At least not just now. The sonar soldier took off his headphones and answered his superior's question. As a recruit, he was also nervous about the current situation, and God knows if a torpedo would rush over and blow their ship in two?

"Did you hear me wrong? The Germans have no reason to spare our fleet. The officer swallowed, then asked cautiously.

"Yes, it is possible. "Because of the large number of ships launched, there are too many new sailors in the U.S. Navy. The U.S. Navy, whose main forces are in the Pacific, has no choice but to fool around with a large group of recruits in the Atlantic. Although the losses of the German submarine attack fleet remained high, the intensity of the battle in the Atlantic was very low compared to the Japanese siege in the Pacific.

Therefore, the United States is also relieved to boldly use newcomers, after all, the German Navy is still at least 108,000 miles away from landing in the United States across the Atlantic. As a result, the quality of the officers and men of these escort ship formations is generally not high, which is another reason why German submarines have been able to succeed repeatedly.

Just imagine the extent to which the quality of the German Army has declined dramatically after the expansion, and we can deduce how inferior the quality of the US Navy has been after the expansion, and even this inferiority can only be described by the word "miserable." Even a large number of navies were thrown into the icy and choppy waters of the North Atlantic before they even learned how to swim.

After another half an hour, the newly trained sonar soldier took off his headphones again and looked at the officer behind him: "Listen, I can't hear it." There was no sound at all...... It may have been gone, or it could have been me, I misheard. ”

So everything rejoiced, and the nervous officer behind him wiped the sweat from his forehead and let out a long breath. He lifted his head and looked through a nearby glass window at the huge fleet behind him, which had been ordered to replenish food and fuel for Iceland, and no one could tell why it was so large.

In a huge castle off the coast of France, a group of senior commanders of the German Navy's submarine forces are busy with a huge nautical chart, Germany now has more than 400 ocean-going submarines, and more than 90 submarines are operating near Iceland. These advanced wolves roamed the seas, pinning down the British and American navies with staggering sinking ratios.

The German Navy was reinforcing what they lacked, and Raeder could finally begin equipping his fragile carrier fleet with truly superior warships like a true World War II admiral. The commissioning of the new heavy cruiser finally gave the entire surface ship unit of the German Navy a decent artillery equipment in its own hands. The pressure on Germany's traditional maritime forces, which had struggled to support the battleship Marshal Raeder, was finally relieved, and at a time when the US Navy was launching more and more newer aircraft carriers.

"General! It's an urgent telegram from submarine U-47. A communications officer in charge of the radio hurriedly handed a message with advanced encryption to Admiral Dönitz, who was standing in the corner of a huge chart, looking at the entire Atlantic.

The commander-in-chief of the Navy's submarine force, who was once sent by Accardo to the Netherlands to secretly form Germany's first submarine fleet, is now the second man in the Third Reich Navy. His wolf pack was a great success, and he himself was one of the most sought-after generals in the German Navy.

"Oh, Prien's telegram?" Dönitz took the encrypted telegram, flipped a page, and compared it directly with the translation. His eyes swept over the sensitive words, and then he habitually raised his eyebrows and signed his name at the back of the document - Carl Dönitz.

Then he called his deputy: "Give this document to the Imperial Ministry of Intelligence, and remind me to make a phone call to General Gascoll later, which is an important intelligence statistic that the United States is helping the British remnants in exile in Iceland and strengthening their power in Iceland." ”

More frequent fleet ...... What the hell is being transported?" Dönitz frowned, he didn't know what his opponent was thinking, but he knew that both the Americans and the British were trying to break the superiority of his wolf pack beneath the surface of the Atlantic. This is not a very good signal, it is likely that the enemy is planning a counterattack!

......

The original version of the document has not yet been seen, but the news has been passed to the intelligence of the Wehrmacht of the Third Reich, and in Gascoll's office, a group of intelligence experts are analyzing the telegram from the distant Atlantic sea. Prien's submarines were carefully calculated and found that the Americans were sending their transports at a more frequent pace, and the rest of the submarine force confirmed that the number of Allied submarines going to Iceland was increasing.

What exactly is being transported? That's a very important question. Obviously, such a large-scale transport is not to continue the existence of the Icelandic base, but to expand the base and use it on a large scale. This was not good news for Germany, proving that the Americans and the British were plotting a joint counterattack across the Atlantic.

"Immediately send a message to the American and British spy bureaus, so that they can find out what the Allies are doing in Iceland as soon as possible!" Gascoll banged on his desk, and finally said to his men, "Whatever they are going to do, we must know in advance and stop them!"

At the SS headquarters, Reinhardt was saying the same thing to his men: "I don't care what method you use, but I must find out the detailed Allied plans for the Icelandic base and put them on my desk!