Transmigrated as the Crown Prince

Everyone teased the puppy for a long time, and the soldier on guard reported. "Platoon commander, backup is coming."

I saw an armored force approaching from a distance. Two "Cheetah" self-propelled anti-aircraft guns, three "Grizzly" assault guns and several armored personnel carriers drove under the building. Dozens of heavily armed soldiers got out of the personnel carriers and entered the building. Seeing this, the platoon leader spoke. "It seems they are going to take over this place. Let's go back and have a hot bath at night!"

"Long live!" The soldiers suddenly cheered and neatly packed their things and prepared to leave.

"You're lucky, little guy." Bowman picked up the puppy and followed the others downstairs, getting into the armored vehicle.

After a bumpy ride back to the camp, everyone who got off the armored vehicle noticed a strange vehicle parked not far away. Below it was the chassis of a Jackal tank, and above it was... a radar? If you look closely, it is indeed a radar, and the antenna of this radar is not facing the sky, but tilted at 45 degrees, as if it is about to fall down at any time.

This was the first time they saw such a strange combination, and they gathered around curiously. "Hey, what kind of car is this? What is it for?"

The soldiers who had already gathered around the car replied casually. "It's a ground-penetrating radar. It's a radar used to detect the underground. It can detect the Soviet underground fortifications."

"Oh, so powerful!" I thought that the radar could only detect aircraft in the sky and ships on the sea, but I didn't expect that it could even see things underground. "Now those rats underground have nowhere to hide."

In fact, the history of ground penetrating radar can be traced back to the early 20th century. As early as 1904, German engineer Housmeier first applied electromagnetic wave signals to the detection of underground metal objects. Later improved ground-penetrating radars used high-frequency, often polarized radio waves and emitted them into the subsurface. When an electromagnetic wave hits an object buried beneath the earth's surface or reaches a boundary where the dielectric constant changes, the reflected wave received by the antenna records the signal difference of the reflected echo. The principles involved are similar to reflection seismology, but electromagnetic energy is used instead of acoustic energy, and electromagnetic waves are reflected at boundaries of different dielectric constants, whereas acoustic waves are reflected at boundaries of different acoustic impedances.

Just as Bowen and others were lamenting the rapid development of science and technology, in the distant Pacific Ocean, a huge German fleet was sailing toward the Hawaiian Islands.

"Five battleships, six aircraft carriers, a dozen large transport ships, several destroyers, frigates, etc." The atmosphere in the U.S. Pacific Fleet headquarters was quite solemn. The new commander-in-chief of the Pacific Fleet, Chester William Nimitz, listened. He frowned deeply while listening to the staff officer's report. (After the last German attack on Oahu, the Pacific Fleet Command had been moved to the naval base in California, USA. The former Pacific Fleet Commander-in-Chief Husband Edward Kimmel was dismissed and replaced by Nimitz.)

Nimitz was born in Fredericksburg, Texas, to an ordinary German immigrant family. In 1905, Nimitz graduated with honors from the U.S. Naval Academy. Early in his naval career, he served as destroyer and submarine commander. In the practice of commanding submarines, he proposed the idea of ​​replacing gasoline engines with diesel engines. After diligent study, Nimitz became a submarine power expert and was promoted to the rank of lieutenant commander. While studying at the U.S. Naval War College, Nimitz and his colleagues explored circular combat formations with aircraft carriers as the core, and improved them in practice after graduation. This circular battle formation became the standard U.S. aircraft carrier formation during World War II. After taking up the post of Commander-in-Chief of the Pacific Fleet, he formulated the strategic policy of active defense, taking the initiative to attack, accumulating small victories into big victories, and reviving the morale of the US military. The victories in the "Battle of Coral Sea" and "Battle of Midway" reversed the unfavorable situation of the United States in the Pacific battlefield and opened the prelude to the strategic counteroffensive.

There are still more than a dozen large transport ships in the German fleet. They are obviously going to carry out landing operations. Their target is probably the Hawaiian Islands!

The Hawaiian Islands are located in the center of the Pacific Ocean. They are about 3,800 kilometers away from San Francisco in the east, nearly 4,000 kilometers away from the Aleutian Islands on the edge of the Bering Sea in the north, more than 5,000 kilometers away from American Samoa in the south, and about 6,000 kilometers away from Guam in the west. It is not difficult to see that the Hawaiian Islands happen to be located in the center of a maritime circle with a radius of about 4,000 kilometers, and there are no other important islands to rely on within this range. Therefore, relying on the unique geographical advantages of the Hawaiian Islands in the Eastern Pacific, the US military must include them at the core of strategic deployment in the Pacific and as the main support base of the United States.

Now that the Germans are eyeing this place, it stands to reason that they should fight back with all their strength, but the Atlantic Fleet tells him with bloody reality that the German fleet is not that easy to mess with. Fighting against the German fleet is like hitting an egg against a stone. It will break into pieces when touched. The performance of our own carrier-based aircraft is not as good as the opponent's, the performance of our torpedoes is not as good as the opponent's, the performance of our radar is not as good as the opponent's, in short, we are inferior to the Germans in all aspects. How can we fight this battle?

Just as he was sighing in his heart, his general suggested. "Commander, we should avoid its edge and wait for the opportunity." Many people around him nodded in agreement.

In fact, this was also Nimitz's idea. For the sake of safety, he felt that it was best to give up the defense of the Hawaiian Islands first. However, he did not intend to let the Germans succeed easily. They had repaired the defenses on Oahu as much as possible. There were four elite divisions left on the island, which should be able to defeat the German troops who landed on the island. "Withdraw all warships remaining in Hawaii."

When the German fleet was more than 300 kilometers away from the Hawaiian Islands, the shipboard radar discovered the US military fleet.

The aircraft carrier formation immediately took off fighter jets to fight.

The U.S. military has more than 200 fighter planes, torpedo planes, and bombers in total. Unfortunately, the performance of the fighter planes cannot keep up with the German carrier-based aircraft. After more than 80 carrier-based aircraft are wiped out, the remaining torpedo planes and bomber groups will become The meat on the felt board is ready to be slaughtered. The last bomber was shot down in the sea more than 50 kilometers away from the fleet.

In the bridge of the German fleet flagship, the correspondent reported to Fleet Commander Hermann. "Commander, received the telegram. All the US fleets originally stationed in the Hawaiian Islands have left port and returned to the Naval Base in California. However, four divisions are left on Oahu."

Commander Hellman snorted disdainfully. "Hmph, these cowardly Americans have completely lost the courage to fight with us now. Do you want to stop us from landing on the island with just four divisions?"