In the early autumn of August 1919, Fang Yan, who had been in this world for more than half a year, finally took the first step on his own path of reform: that is, he left Rudolf, who ran the family business in Hamburg, and went to his own secondary school in the capital Berlin alone. Worried that his young son would be too young to adapt to living alone at school, Rudolph rented a house in a residential area adjacent to the school, and had one of his confidants stay in it to take care of Fang Yan's life and supervise his studies during his after-school time.

Although in his previous life, Fang Yan began to live alone at an age that was twice as young as his current body, and there was no need to send someone to do so much, but after thinking about it carefully, he nodded and agreed. In addition to not being too surprised by his changes, Rudolph also saves a lot of time every day doing chores, which allows him to devote himself to improving himself. The middle school curriculum was not worth mentioning to him, and what he really needed to study was the specific knowledge of naval strategy and tactics, as well as shipbuilding and aeronautics, in the school library.

Ever since he decided to change Germany's national fortunes, Fang Yan has been thinking carefully about which aspects to start with. Historically, Germany's eventual defeat in World War II was directly related to many factors: Politically, the bloated and corrupt National Socialist Party kept Germany's war mobilization at a very low level for a long time, so much so that Germany, which owned the entire industry of Central and Western Europe, produced less aircraft in 1940 than Britain in 1940, and did not reach the level of general mobilization in the same period of 1914 until the end of 1944, when the edifice was about to collapse. In terms of decision-making, Adolf, who experienced a brilliant victory in the early stage? After 1942, Hitler made a series of tricks, not only ruining the good situation on the Eastern Front, but also allowing the Allies to easily open up the southern and western fronts, causing Germany to plummet at the peak of victory and fall to the end of a trough unseen in hundreds of years. In terms of resources, Germany lacks nothing but coal, and not only does warplanes, tanks, warships, and vehicles suffer from a lack of fuel, but the scale and quality of its equipment production are also greatly reduced due to the shortage of raw materials. In terms of intelligence, the so-called indecipherable Enig cipher machine is no secret in the hands of the Allies, and many times the Allies can clear the fog of war and fight from the perspective of God.

However, after in-depth exploration, Fang Yan put all these factors aside, and placed the core of the change on the navy. Because the defeat of the German Navy in the war against Britain was the most fundamental reason for Germany's final defeat.

In July 1940, Germany was left with only one adversary in Europe, the United Kingdom, but while the British showed their determination to die under Churchill's leadership, the invincible German chariots on the continent found themselves with no effective means to force them to submit. The air bombing method had to come to a dismal end after two months of air battles in England, and the huge losses made it impossible for the Luftwaffe to continue the operation: in fact, even if the Luftwaffe succeeded in overpowering its British counterparts, it would be pure delusion to force the other side to submit without ground troops crossing the sea. Due to the huge gap in naval strength between the two sides, as well as the unfavorable factors such as darkness, mines, and shore artillery, it is also impossible to achieve the task of allowing a large army to complete the sea crossing and provide a steady stream of logistical support by relying on air superiority alone. The British only needed to assemble their fleet for a night raid to wipe out the German landing ground and supply ships!

In this case, Germany could only choose to break diplomatic relations at sea for a long period of time to suffocate the island nation; However, due to serious mistakes in the strategic conception and fleet structure of its navy, the Bismarck and the U-boats, which represented surface and underwater sabotage warfare, were disgraced, and the seeds of defeat were planted in Germany.

With the entry of the United States into the war, Britain, which held on to Europe, suddenly became the front-line bridgehead of the United States' counterattack on the European continent; Millions of tons of merchant ships sailed to England, making it a central stage for direct confrontation between Germany and the United States. And even if the whole of Europe is twisted into a rope, the United States still occupies a decisive industrial advantage; Not to mention the fact that Europe under German rule was already in constant revolt: Poland, Czechoslovakia, France, Belgium, the Netherlands, ...... It is impossible for the people of such countries to die for the notorious and ferocious German invaders, and this has further widened the gap in hard power between Germany and the United States. In addition, Britain's presence allowed the Soviet Union to send war materials to the East via the Arctic and Indian Ocean routes, further exacerbating the pressure on Germany. Once it enters this general trend of competition between industry and manpower, no matter how much Germany tries to eliminate its ills, it will be impossible to win victory under the encirclement of the Soviet Union, the United States and Britain!

Therefore, Germany's only chance was to defeat Britain early. As long as this bridgehead is lost, which can calmly prepare supplies and accumulate military strength, then no matter how strong the United States is, it will not be able to cross the entire Atlantic to launch an expedition against Germany. And the Soviet Union alone is not at all in the face of Germany, which does not need to divide troops on three fronts, and it will take Germany two years at most to overcome the full success.

Even if war broke out between Germany and the United States in the end, as in history, the United States, which had no choice but to deal with its opponents, would eventually have to take a step back and negotiate peace with Germany, so that Germany would be able to safely capture the fruits of victory. As for the US government's attitude towards Germany, Fang Yan did not have any illusions from the beginning: since the Lend-Lease Act in early 1941, this government, which was full of human rights and justice, but in fact its actions were all foreign expansion, had fully sided with Britain; American warships began to openly escort British convoys, and Roosevelt gave orders that American warships could attack German submarines on the spot, even before the German-American war began. As time passed, it was only a matter of time before the United States entered the war against Germany, as they would have made in the last big war!

As for the later popular view that Germany could avoid war with the United States if it did not ally with Japan, it was nothing more than a clumsy pretext used by the English-speaking world to deliberately belittle German foreign policy. The Londoners seem to have forgotten that a few years ago they had lost again and again in the diplomatic game with Germany, so that the other side returned to the international stage with almost no hindrance; If it weren't for the rich heritage left by their ancestors, they would have been conquered and trampled by the revenge of the other side for hundreds of years, which has plagued the peace of Europe for hundreds of years.

And to force Britain to withdraw from the war early before the United States is fully mobilized, Germany's only recourse is the navy. If the ideal situation of sweeping away the British navy and covering the landing of the main army force should also be able to cut off its sea shipping lines, forcing Britain to sue for peace in the midst of a severe famine. As long as the German Navy clicks on the technology tree and optimizes the details in more depth, even if it is only a few years of preparation, it has every chance to defeat the old opponent across the sea!

After this plan, Fang Yan decided to continue to follow the ideal of "Jonas" and set his future development in the field of the navy. Whenever he is not in class, he will appear in the school library on time, and all kinds of war history, warship performance analysis, and books related to the subsystem are his borrowing targets; When the school's library collection was no longer sufficient for his professional curiosity, he even took the city tram to several universities in Berlin on his days off to find the books he needed in their collections. After coming and going, Fang Yan had already relied on his age "advantage" and clever tongue to become familiar with these librarians, and in the continuous study, Fang Yan had also accumulated a lot of detailed knowledge, which was an excellent enrichment to his previous life's macro perception of the navy.

The first-graders were young and naïve, with a mind and knowledge higher than theirs, and Fang Yan soon became an outlier in their eyes: this self-admitted young guy almost never played with them, and there were always a few books in the desk drawer that he didn't know what to call difficult. However, this did not make Fang Yan ostracized, on the contrary, it made him gain the unanimous admiration of everyone; Gainfangyan himself has an excellent image, and there is nothing to fault with his schoolwork, which has been praised by all the teachers and teachers. When he was in school, he was often accosted by girls his age inside and outside the class, and letters confiding in him were often found in the drawer. However, Fang Yan, who is not a gentleman (Hentai), has no interest in these thin little girls, and his ideal is not to be a stable and leisurely rich man; In the face of these pearl fandels, he politely and politely refused, and waited for the moment when the cold edge was unsheathed in the continuous self-enrichment.

Spring and autumn cycle, cold and summer change, in the full and busy life every day, Fang Yan seems to have returned to the years of hard work and struggle in his previous life. Although the conditions are much better now than before, the habit that ticks into the soul makes him completely unrelated to the word lazy. He had to go back to Hamburg once a month to spend a day with his cheap dad, and Rudolph was overjoyed by Fang Yan's performance, and his pain and anxiety about the current national disaster gradually faded. When Fang Yan finally celebrated his 12th birthday in the early summer of 1920, Walter on the other side of the ocean also received exciting news through an informant.

Thank you for the tips of the book friend Z Taoist and Brother Xu~~ Please give some collection and recommendation, so that the author will be more motivated