Second Lieutenant Bren piloted his own plane, and his heart was pounding.

"Mr. Colonel, we have penetrated into the German defense zone."

"That's our mission, Second Lieutenant Bren." The colonel of the military intelligence department in the back seat said disapprerovantly, "We have received accurate information, and today the German army will have a big operation against our fleet." Rest assured, we also got the German air flight plan, and the German vigilance radar and fighter units would treat us as their own aircraft. ”

In this era, there were no identification devices at all, and the identification of friend and foe in air combat could only be seen by the pilot's eyesight - but the distance between the enemy and the enemy in air combat was generally quite far, and it was also very difficult to identify the model except for large bombers, especially when the main fighters on both sides were liquid-cooled piston fighters in the shape of long cigars. That's why the Luftwaffe painted a striking yellow nose on the nose of the nose, which sacrificed concealment to improve recognition.

On the other hand, a British fighter jet would look similar to a real German fighter in the air if it was painted with a paint similar to that of the Germans.

Of course, it is impossible to spray all the British fighters as the same virtue as the German fighters in actual combat, because that would interfere with the identification of the Germans and also interfere with the identification of the British themselves, and the battlefield of air combat would become a pot of porridge. So the British are now using a very different livery style than the Germans, which greatly facilitates the identification of enemies on the battlefield – and of course makes it easier for them to identify you.

But it was fitting to spray a fighter like this to look like a German fighter and use it to blend into the airspace defended by the Germans for reconnaissance.

However, the biggest difficulty of this reconnaissance mission is the German radar on the ground, but if you get a German flight plan, you can disguise yourself as a plane that has fallen behind in a mission, which is very common, and sneak up on the little secret of the Germans.

Second Lieutenant Bren was still very worried, he had already felt that he had seen the shadow of the German plane more than once, and sometimes he even felt that the Germans had been staring at him with radar for a long time, waiting for the moment when he himself fell into the trap.

But now Ensign Bren could only regret that he had accepted the task without refusing, and continued to fly forward, hoping that Lady Luck would be as attached to him as she had been in the past.

**

Cyprus, a new radar station for the German army.

"An unknown aircraft has been found in the southeast." The radar operator reported loudly.

The officer on duty immediately flipped through the flight mission plan at hand.

"There are no aircraft that fit into the mission plan, they are enemy aircraft. Hair ......"

"Wait a minute," a voice from the door interrupted the officer on duty, and then the head of the radar station walked in, "Leave him alone, when we don't see the spot, send another report to the headquarters, the content is 'George has a stomachache'." ”

The officer on duty and the operator looked at each other, and then each realized that the other was as completely confused as himself. However, the temperament of the German soldiers made the officer on duty immediately carry out the order.

**

After listening to the report of the communication soldiers around him, Lin Youde turned back to the technical officers of the 603 Technical Test Brigade and ordered: "Jörmangande has begun to enter the launch procedure, and the British operation has begun. ”

"Start the launch procedure, the British operation begins!" The commander repeated Lin Youde's instructions aloud.

The entire bridge was busy, and Lin Youde turned to the signal corps: "Convey the same instructions to all the troops scheduled to participate in the battle, and the British operation begins." ”

"Yes."

**

South of Cyprus, the German submarine U571 has been in passive sonar contact with the British fleet.

One of the effects of the technological innovation brought by Lin Youde on German submarines was the improvement of the performance of sonar systems, which of course was based on the strict requirements for sonar soldiers - because there was no analysis machine that could assist in the recognition of various voiceprints. However, the submarine forces of the German Navy did not lack soldiers who were willing to learn and have sharp ears.

While the passive sonar is in contact, the U571's communication buoy remains floating on the water, and this buoy is so small that it is almost impossible to discern the camouflage-colored buoy with the naked eye if it does not get close to a distance of 500 meters. However, the small size also means that the reception function is also weak, so it is almost impossible to receive a telegram from Cyprus without the relay of the Junkers-3 high-altitude reconnaissance aircraft in the sky. But now, this set of German telecommunications is very normal, so the U571 has also received an order from Cyprus to start operations.

"Cut the communication buoy cable, periscope depth."

"Captain, are we going to attack?" The helmsman asked in surprise, "It will be very difficult for us to attack the enemy's capital ship in our current position, we should use passive sonar to go a little further inside, and float the periscope to be easily discovered by the lookout......"

The lens of the periscope is not as compact as that of the communication buoy, and the connection between the communication buoy and the submarine is deliberately long, so the towed track is unstable and irregular, which is very deceptive due to the influence of the current on the line. The periscope can be different, it will be straight to the surface of the sea. It is now broad daylight, and it is not very difficult for a well-trained lookout to spot the inexplicable protrusions ♂ of darkness and roughness in the sea, so submarine attacks will emphasize night cover.

"It doesn't matter," replied the captain decisively, his men and his co-captain did not know the details of the British battle plan, only he knew the mission he had been given, "being discovered is what we are here for." The first torpedo tube is filled with water! ”

"But we can only attack one light cruiser now." The gun control officer protested loudly, "It takes half an hour for the torpedo to be reloaded, I think it will be enough for us to raise the periscope, the torpedo should wait for a better fighter." ”

"It's okay, it's not bad to patrol lightly." The captain said, "I'm pushing forward the battle plan on a stopwatch." ”

The communication buoy is too small to send a message at all, not to mention that now that thing has been abandoned, and the U571's periscope deliberately removed the communication antenna originally installed on the top of the periscope in order to reduce the visibility of the periscope - many U boats do this.

"Torpedo tube water!" The captain repeated the command again.

"Yes, the torpedo tubes are filled with water!"

**

The bridge of the British cruiser Lynsen.

"Inject water into the torpedo tube on the starboard side!" Everyone was startled when the chanting of the sonar room rang out over the loudspeakers.

"What's the distance?" The captain pounced on the microphone and asked loudly.

"It's close! Probably less than two thousand yards. ”

"Damn it, right full rudder!"

The captain of the Lin Xian felt that luck had not completely deviated from him, at least his sonar heard the sound of water injection coming from, you must know that the sonar at this time is very primitive, the sonar person has to constantly rotate something like a turntable, according to where the sound is the loudest to judge which angle the sound is coming from, the sound of the transmitter tube filling water will disappear soon, often heard but unable to identify the direction.

As long as the bow is aimed in the direction of the torpedo, the possibility of avoiding the torpedo will be greatly increased - this is because firstly, the cross-section of the bow to the enemy is greatly reduced, and secondly, when the bow is facing the enemy, the bridge has a good forward view, and the torpedo track can be seen directly without the assistance of the lookout, making it easier to avoid the torpedo.

However, the enemy was so close that the German torpedoes had a speed of 44 knots, and the distance of less than two thousand yards was quickly exhausted, and the captain did not know at all whether his ship would have time to turn to the correct course.

"Report to the fleet that we are torpedoed!"

As soon as the captain finished speaking, the violent impact almost threw him against the wall of the bridge.

Now there is no need to inform, the fleet also knows that they are being torpedoed.

**

Cunningham watched from the bridge of the Warweary as a huge column of water rose from the starboard side of the Linsen.

"Submarines...... Cunningham said, bending down and looking into the sky, the German high-altitude reconnaissance planes were still hovering overhead, and the fighters of the aircraft carrier Dreadnought and the handsome soldiers of the shore-based heavy battle were very bad at the flight altitude of the Junkers 3, so they could only shoot it down with a B17 or B24.

"I knew that all the time I was stared at by that fly, there would definitely be a school of fish being guided." Pound muttered, "Our high-altitude fighter has too short a range, and I don't know what the guys who designed it think." ”

Cunningham did not immediately respond to Pound's words, but thoughtfully.

"Don't you think it's too strange to shoot at a light cruiser?" After a few moments, the veteran whispered, "It's like deliberately exposing it to us." ”

"Maybe this U-boat is a novice, and it doesn't dare to continue diving past the Lin Xian."

"I don't think it's such a simple reason."

"It could also be that the U-boat group was already in place," said a colonel on the bridge, "and then a U-boat would attack the convoy first, pulling the convoy in formation, as they often did in the Barents Sea." ”

"Hmm." Cunningham only replied like this, and was silent for a long time before he said, "It's probably right to set up a ring formation first, even if we suddenly encounter the combined fleet of the French and Italian navies, we are not particularly worried about the strength of the troops." ”

"I agree, it's safer to swing the ring." Pound nodded immediately.

As a result, the main force of the British Mediterranean Fleet began to change formations, and in order to match the change in formation, the battleships, which were the core of the fleet, began to slow down in order to give the escort ships time to reoccupy their positions.

**

In the air, the German shore-based reconnaissance group No. 313.

"The British are beginning to change formations," shouted the observers, "and the formation is turning into a circle!" The speed of the whole fleet was reduced to 18 knots. ”

The commander of the plane immediately asked the navigator in a loud voice: "Our precise coordinates?" ”

As soon as he finished asking, a note was slipped into his hand.

"Very well, send a report immediately, report to Jormangunde."

(After the previous chapter was issued, some people said that I was Sister Black Cannon, but in fact, as long as I know how to calculate, I will know it, this is Hippo's own math is not good.) Sister Artillery's coin is 5 grams, and the launch speed is three times the speed of sound, and the triple speed of sound is roughly equal to 1000 meters per second, we use this divisor to calculate. THE KINETIC ENERGY OF AN OBJECT IS EQUAL TO 1/2MV SQUARED, AND 5 GRAMS CAN ONLY BE USED IF IT IS CONVERTED INTO KILOGRAMS, THEN IT IS 1/2X0. 005X1000X1000, which is equal to 2500 joules. What kind of concept is this, the maximum power of my induction cooker is 2500 watts, that is to say, the energy released by the maximum firepower of my induction cooker for one second is equivalent to the energy of the electromagnetic cannon. Well.

As for saying that 15 times the muzzle velocity of the K5 train cannon has exceeded the first cosmic velocity, then what, I felt that it was inappropriate after I sent out the previous chapter, so I immediately modified it to 15 times the kinetic energy, so when converting to a multiple of the muzzle velocity, it was necessary to open the square, that is, less than four times, so it was reasonable. I'm afraid it's a book that I read on some websites that won't update my revisions at the same time, and you've exposed it...... ）