The Fourth Expeditionary Force of the United States Marine Corps is actually the Fourth Marine Regiment of the United States Marine Corps, and the so-called headquarters is actually the regimental headquarters of the Fourth Marine Corps, which is stationed at No. 527 Haiphong Road in the Shanghai Public Concession.

In 1927, in order to prevent the Northern Expeditionary Army led by President Chang from attacking Shanghai, the U.S. military quickly transferred the Fourth Marine Regiment stationed in the Philippines to the Shanghai Public Concession and called it the Fourth Expeditionary Force of the U.S. Marine Corps. Since then, the 4th Marine Regiment of the US Marine Corps has been stationed in Shanghai and has become an important armed force to safeguard US interests in China.

The Chinese Government, including the Intelligence Department, is very clear that the US Marine Corps Fourth Expeditionary Force Command has been secretly collecting intelligence on China, but as far as the Chinese Government and Intelligence Department are concerned, the biggest threat facing China at this time is the Japanese, and the Americans have always supported the Chinese Nationalist Government in order to curb the expansion of Japanese influence in Asia, so they have not interfered much with the United States' efforts to collect intelligence on the Chinese side.

Therefore, Lin Jiangbei did not expect that he would be able to see such an important intelligence photo as "The Fourth Expeditionary Force Command of the United States Marine Corps on China" today. Moreover, it can be seen from the header of the document that this secret document is a confidential message sent by the command of the Fourth Expeditionary Force of the US Marine Corps to the commander-in-chief of the US Asian Fleet.

Lin Jiangbei quickly flipped through these photos and found that this intelligence summary was divided into several parts. The first part is the Chinese part, which is divided into a political part and a military part.

The political part is divided into several parts, which not only talk about the relevant political strategy of the central government of the Republic of China toward Sichuan, but also talk about the contents of the military conference held by Japan in Dalian at the beginning of this month, and also talk about the implementation of the provisional agreement on postal services between the Nanjing Nationalist Government and the puppet state of Manchukuo, as well as the progress of the agreement between Japan and the Soviet Union on the Eastern Railway, and finally report on the personnel changes of the replacement of the Japanese assistant military attache in Beiping.

The military part mainly deals with the changes in the troop movements of the Chinese army, focusing on the troops of the southwest Sichuan and the northeast and northwest armies of the northwest and Shaanxi.

The second part is the Shanghai part, which mainly covers the Shanghai area, including the economic situation of the public concession and the French concession, as well as the increase or decrease of the military strength of various countries.

After reading this "Summary of Intelligence on China by the Fourth Expeditionary Force Command of the US Marine Corps," Lin Jiangbei was quite disappointed to be honest. I didn't expect that the so-called "classified" intelligence materials provided by the 4th Marine Regiment of the US Marine Corps were all such big and simple things.

Where can these things be collected in the name of the 4th Marine Expeditionary Force Command? Just send a few reporters, subscribe to a few newspapers, and directly extract the news from the newspaper and summarize it?

Given the capabilities of the United States' powerful military intelligence organization, is it not so? It can only be said that the attention of the US military intelligence organization is not on the Chinese side, and it does not attach importance to the investigation and collection of relevant intelligence in this regard of China at all.

A few years later, the Japanese Navy was able to make a long-distance attack and successfully attacked Pearl Harbor in the United States!

Lin Jiangbei pondered in his heart, handed these photos back to Duan Yinong, and said in his mouth: "Director Duan, what do you mean by letting students come and see these things?" Wouldn't it be because you want us to step up intelligence surveillance on the U.S. side? ”

"What is there to strengthen intelligence surveillance on the American side?" Duan Yinong put the photos on the coffee table next to him, "Jiangbei, do you know where you got these photos?" ”

"From an informant inside the command of the 4th Expeditionary Force of the US Marine Corps?" Lin Jiangbei tentatively said his guess.

"No!" Duan Yinong shook his head and said, "If it was really obtained from an informant from the US Marine Corps, would it be necessary for me to rush to Shanghai by special plane and specially call you to my apartment?" ”

"Didn't you get it from the U.S.?" Lin Jiangbei couldn't help but be taken aback, and immediately thought of another possibility, "Director Duan, could it be that these photos were obtained from the Japanese?" ”

"You guessed it right!" Duan Yinong nodded solemnly and said, "These photos are flowing out of the hands of the Japanese!" ”

It turned out that Wang Guanghui, the second head of the Shanghai District of the Intelligence Department, had secretly developed an informant in the Shanghai Public Concession. The informant's name was Wang Shizhen, who had studied in Japan, and after returning to China, he opened a photo studio on Huangpu Road in Shanghai, not far from the Japanese Consulate General in Shanghai. Because the photo studio equipment is relatively advanced, intelligence officers from the Japanese Consulate General often go to his photo studio to use his darkroom equipment to develop secret photos.

Sometimes Wang Shizhen herself will be called into the darkroom to help develop photos for the Japanese. Wang Shizhen often took advantage of the fact that the Japanese were not on guard, developed a few more photos, stole them and handed them over to the intelligence officers of the Shanghai Region of the Intelligence Department.

The same is true for these photos. After the intelligence officer in charge of communicating with Wang Shizhen in the Shanghai Region got these photos, he quickly sent them back to the headquarters of the Shanghai Region.

Because Wang Xinheng, head of the Shanghai region, had already received an order this morning to go to Xi'an in the near future to take up his post as head of the Xi'an intelligence station, Zhang Shixue, secretary of the Shanghai region, was temporarily in charge of the work of the Shanghai region before the new head of the region, Zhou Long, rushed from Hankou to take up his post.

It was the first time that Zhang Shixue had seen the English information circulating from the Japanese intelligence organization, but fortunately, he had studied in Russia and was proficient in both English and Russian, so he quickly translated the contents of these photos.

After the translation came out, Zhang Shixue couldn't help but be surprised. He was surprised not so much by the intelligence content of these photographs, but by how the classified information reported by the US Marine Corps Fourth Expeditionary Force Command to the commander-in-chief of the US Asian Fleet could have fallen into the hands of the Japanese.

Doesn't this mean that there are moles from Japanese intelligence organizations in the command of the Fourth Expeditionary Force of the US Marine Corps or the command of the US Asian Fleet?

Therefore, Zhang Shixue did not dare to slack off, and immediately reported to Duan Yinong, the headquarters of the Nanjing Intelligence Department.

Duan Yinong was also very shocked when he received Zhang Shixue's report. If there are moles from Japanese intelligence organizations in the US Asian Fleet Command or the Fourth Marine Regiment in the US Asian Fleet Command or the Fourth Marine Corps, wouldn't it be very easy for the Japanese side to obtain China's confidential information through the US Asian Fleet Command or the US Marine Corps Fourth Marine Corps?

Therefore, even though it was at the most critical moment of personnel changes within the Intelligence Department, and even at the critical moment of deciding the candidate for the anti-smuggling director of the National Anti-Smoking Supervision Department, Duan Yinong still decided to leave Nanjing and take a special plane to Shanghai to deal with this matter.

At this time, he gave Lin Jiangbei a detailed introduction to the twists and turns in the middle, and then said: "Jiangbei, I have two purposes for going to Shanghai this time. The first is to go to No. 527 Haiphong Road to communicate with Colonel Price, commander of the 4th Marine Regiment of the US Marine Corps, so that the US side can conduct an internal screening and find out the Japanese moles that may be hiding in the 4th Marine Regiment of the US Marine Corps or the US Asian Fleet Command. ”

"The second purpose is to start from the Japanese side and see if we can follow the clues of the Japanese Consulate General in Shanghai to find out the Japanese moles in the Fourth Marine Regiment of the US Marine Corps and the US Asian Fleet."

Speaking of this, he paused, looked at Lin Jiangbei and said, "Jiangbei, I plan to hand over this second task to you!" I hope you can follow the clues of the Japanese as soon as possible and find out the moles they have planted on the American side. ”

"Director Duan," Lin Jiangbei pondered, "It's not that I'm afraid of difficulties and unwilling to accept this task. It's just that students really can't figure it out, and the Shanghai region is full of talents, and they are far more familiar with the local situation in Shanghai than students. Wouldn't it be better to leave this task to them? Why leave it to the students? ”

"There's a reason for this!" Duan Yinong sighed and said, "The current situation in the Shanghai region is different from the past. The main reason is that at the beginning of last year, President Chang ordered the approval of the reconnaissance brigade of the Songhu Garrison Command to be formally handed over to our intelligence department to be responsible, and some arrest and surveillance work was also handed over to the reconnaissance brigade, the purpose of which was to allow the intelligence department to directly imprison the arrested political prisoners in Shanghai in the investigation brigade, and conduct a preliminary trial, without having to escort all of them to Nanjing. ”

"But one of the more obvious side effects of this appointment is that the activities of our intelligence department in Shanghai have slowly shifted from secret to semi-public. The identities of all the intelligence personnel working in the reconnaissance brigade of the Songhu Garrison Command were basically exposed. ”

Speaking of this, Duan Yinong pointed to Chen Zui, who was sitting opposite, "For example, Chen Zui, as the head of the intelligence team of the reconnaissance brigade of the Songhu Garrison Command, his identity is already semi-public. It's okay to hand over some work on the surface to him, but secret investigation work is completely unsuitable! ”

"Of course, the Intelligence Division also has some personnel in the Shanghai Region who have not been exposed. But their work ability and level, not to mention compared with you, are also far from Chen Zui. It is obviously impossible to track down the Japanese mole in the United States through the clue of the Japanese Consulate General in a short period of time. And you happen to be in Shanghai at this time, so I thought about borrowing your ability to do this! ”

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