Due to the lack of preparation, the effect of this bombing operation was not much better, and the bombers that took off separately from the airfield were not able to meet in the predetermined airspace at all, and even the bombers that took off from one airfield were not able to act together. In addition, of the six airfields, the closest of which is 1,200 kilometers from Santiago, C-Li, given the possibility of accidents during the flight, bombers carrying 35 tons of bombs cannot have much fuel. As a result, the bombers who arrived first at the rendezvous site did not wait for those who arrived later, and those who arrived later were delayed here for a little time. As a result, the 330 bombers were eventually divided into ten batches, large and small, and arrived over San Diego in nearly two hours.

The first group to arrive in San Diego had 32 bombers, which was a regular group, and these bombers took off from the nearest airport, and 12 of them carried 8,500 kg of aviation armor-piercing shells, because none of the bombers each carried 20 250-kilogram aviation armor-piercing shells. The time when the group arrived in San Diego was ten past four o'clock in the morning, at this time the two task forces led by Spruance had left the port of San Diego for more than an hour, and the sky was not yet bright, and strict control was implemented in the port, and the sky was dark, and the pilots could hardly see the battleships in the port, and it was even difficult to distinguish the difference between the sea and the land.

If in the past. It was definitely necessary for the leading bombers to drop incendiary bombs first to illuminate the bombers behind, and it was indeed arranged for two bombers to carry incendiary bombs to enter first, but these two bombers did not keep up with the first batch of bombers, but fell behind, that is, in the rear. The first bombers were only able to drop bombs in the dark. If it weren't for the radar sights that were already massively equipped for heavy bombers at that time, I am afraid that these 32 bombers would not have been able to bomb them at all.

The appearance of radar sights is both accidental and inevitable. As early as the time of the strategic bombing of Japan, the problem of bombers being difficult to aim at targets at night was exposed, and there were not many solutions that could be found at that time. It was at this time that it was proposed to use radar to detect ground targets, and then guide bombers to drop bombs. But the problem is. At that time, the research on radar was not very deep, and the interference of ground miscellaneous was quite serious, and there was no suitable solution, so the difficulty of developing a radar sight can be imagined. At that time, several sets of radar sights with a serious experimental nature did not perform well on the battlefield. However, it was through the experience of using radar sights in the later stages of Japan's strategic bombing that the Empire's electronics engineers found some tricks to improve performance.

Ground noise jamming is a headache for all radar designers, so to speak. Any radar will have such trouble. For example, in the Mariana Islands. and in the night naval battle in the southwest Pacific, it was precisely because of the miscellaneous interference that the shipborne radar could not detect the enemy's warships in time, resulting in many losses that should not have occurred. With the deepening of research, researchers soon found that the miscellaneous signals emitted by objects of different properties are different, and the interference intensity of ground electromagnetic waves in different bands is also different. Or is it a radar that uses jamming to detect a target?

The development work made progress at the beginning of the 25th century, and then Nanjing Electronics built several prototypes, which were first tested by the demonstrator and then on the warship. It was through these prototypes that the engineers of the Empire eventually developed a radar sight capable of detecting ground targets from the air and indicating them to pilots.

The advent of radar sights had a huge impact on strategic bombing, which not only solved the problem of night bombing, but also allowed bombers to fly higher, thus avoiding small-caliber anti-aircraft guns on the ground. It is even possible to evade enemy interceptor fighters and drop bombs from ultra-high altitudes. Reduced bomber ground losses. In addition, the combination of a radar sight and an autopilot can also improve the accuracy of bombing, making the power of bombing more obvious. By this time, the Imperial Army and Navy were equipped with five different models of radar sights, and almost every heavy bomber was equipped with one set. Of course, pilots generally prefer visual bombing, so when conditions permit, the more old-fashioned tactic of using the pilot bomber to drop incendiary bombs to illuminate the target of the follow-up bomber has not been eliminated.

It was thanks to the radar sight that the first 32 bombers that arrived were able to carry out bombing under illumination. But there is one thing that the engineers who designed the radar sight did not take into account, that is, at this time, there are hundreds of blocking balloons floating over the port of San Diego, and these balloons will interfere with the radar, which will affect the results of the bombing!

When the first round entered, it was precisely because of the interference of the balloon that the bombardier who led the long plane was unable to identify the location of the port, and when the second round entered, the bombardier found that there were a lot of balloons floating in the air, and suddenly understood that the US military would not deploy the balloon over the wasteland, so there must be a high-value target under the blocking balloon, that is, the battleship. As a result, the lead plane dropped bombs directly above these balloons, as did another 31 bombers.] bombs. As for whether these bombs hit the target or not, I am afraid that no pilot is willing to fly back to confirm the results of the battle.

It can be said that this is completely blind bombing. Blocking balloons can not only interfere with radar and block the pilot's view, but also block the view of people on the ground and on the battleship, and block the range of fire of anti-aircraft guns. Because of this, the first 32 bombers to enter were almost not threatened, and all of them dropped their bombs without any problems, and then flew away. The biggest advantage of this round of bombing was that the warships of Task Force 21, which were still in the harbor at the time, were forced to anchor and did not dare

Five minutes later, a second batch of 18 bombers arrived. Half of the bombers could not find the warships in the harbor and dropped their bombs on the anti-aircraft positions on the shore, and the pilots of the other nine bombers bravely entered at an ultra-low altitude and were ready to drop bombs from under the balloons, but the target was still not found when they entered for the first time, and one bomber was injured by a shell and was forced to drop bombs back early