On May 25, 1924, a vast fleet of more than 400 ships sailed from the German mainland, crossed the English Channel and entered the Atlantic.

On May 31, the fleet replenished fresh water and supplies in the Azores, such a powerful sea force stunned the crews of various countries, including the Portuguese, and the newspapers of various countries soon reported on this astonishing voyage, which was called a great expedition of Germanic people to defend justice, but many people of insight were well aware that this huge fleet would not bring peace to the world.

On June 8, the fleet entered the Gulf of Mexico, and with the active cooperation of the Mexican government, the fleet dispersed into various ports on the east coast of Mexico to unload troops and supplies, and 320,000 troops and hundreds of thousands of tons of supplies were quickly transported to central and southern Mexico through the main railway lines in Mexico, and the states of Ruz, Oaxaca, and Chiapas became the base of the German expeditionary force. Since the Mexican government and the German garrison had already prepared hundreds of barracks, Oli and his soldiers were accommodated in new and comfortable barracks upon arrival.

To the surprise and bewilderment of most people, the U.S. government, which had previously been staunchly opposed to the German invasion of Guatemala, behaved very calmly throughout the entire process of transporting troops and supplies by the Germans, and their equally formidable Atlantic Fleet remained largely untouched from late May to mid-June, let alone sailed to the German fleet's paths. For this reason, German Prime Minister Batemann praised the US government in public, saying that their calmness and restraint will bring lasting peace to the world.

In stark contrast to this praise, the United States' domestic military factories are operating at full capacity to produce military supplies, while in the Far East, on the other side of the Pacific, a delegation headed by Secretary of State Charles Hughes is holding secret meetings with the Japanese, undoubtedly to get rid of the dilemma of fighting on two fronts, and the trade-off between home and overseas territories is obvious. But. The Japanese offered very high, the Philippines and Hawaii were transferred to the Japanese government, and the American power was withdrawn to the eastern Pacific.

Although such conditions were difficult for the U.S. government and its citizens to accept, in consideration of the safety of their homeland, Charles and others had to be patient enough to bargain with the Japanese. Unfortunately, the Japanese took a fancy to this weakness of the U.S. government, and once Germany and Japan jointly went to war with the United States, Japan could also acquire these two geographically important islands, as long as the timing was right. They don't even have to pay much, because if war breaks out, the Americans will have to concentrate their two-ocean fleet to defend their homeland.

As a result, the secret meetings were always held in an atmosphere favorable to the Japanese Government. After the arrival of more than 300,000 German troops in Mexico, they were not in a hurry to enter Guatemala, because if they really wanted to calm the situation in that small country in Central and North America, a few warships and some marines would be enough, and there would be no need to work so hard. Everyone knew very well that it was just an excuse for the Germans to send troops to North America.

At a joint meeting of the U.S. Army and Navy in early July, President Warren Harding and his top generals agreed that war between Germany and the United States was inevitable and that the key question was when it would break out. Some believe that it is within the current year. There are also those who think it will be next spring. In Warren Harding's own wishes, of course, he hoped that this war would come as late as possible, so that the United States could make more preparations for war with its strong industrial strength. In particular, absolute superiority over the Germans was achieved in terms of naval capital ships and airships. However, even the president himself did not expect this wishful thinking, so he chose the majority view that war would break out in the spring of 1925, which meant that there were seven or eight months left for the U.S. government to prepare.

In mid-July, the situation in Guatemala had re-stabilized, the military leaders of the coup had been arrested, and the new Guatemalan government was headed by a former government minister named Mendoza, who was said to have been bought by the Germans and who had something to do with him.

Although Guatemala was under the control of a pro-German provisional government, a large number of Germans remained in Guatemala and in Mexico close to Guatemala under the pretext of maintaining law and order. Germany began to give the image of the former British Empire's world policeman.

At the same time, on the route from Bremen to Veracruz, hundreds of merchant ships and freighters passed through day and night, and a large amount of military supplies were directly shipped to the port after being produced by German factories; in Hamburg alone, tens of thousands of tons of ammunition and military rations were loaded on ships every day, barrels and barrels of gasoline could be loaded into four or five million liters per ship, and such a cruise ship would have to depart one in one morning, as well as piles of gun parts, military blankets, and military uniforms for autumn and winter. In the ports of Bremen, Groningen, Wismar and other ports, the scene is just as busy, sometimes there are still stevedores working overtime at two or three o'clock in the evening.

In addition, in Britain, France, Hungary, and Bohemia, many factories were also producing various munitions for the German army, Britain provided medium charcoal, iron ore, woolen fabrics, bright heads and light ships, France provided coal, bauxite, chemicals, wheat, meat and wine, Hungary provided steel, aluminum and aluminum products, agricultural products, meat, Bohemia provided arms, agricultural products, textiles and a large amount of meat, plus Poland, Austria and other regions that had already belonged to Germany, Almost half of Europe was working on the preparation for war in Germany.

In Africa, the exploitation and exploitation of various resources are already on the right track, and the minerals, oil, high-quality timber, tropical crops, and canned fish that Germany needs are constantly arriving in southern Germany through the Mediterranean. Since the German government decided to expand the scope and number of conscriptions in Africa, more than 2 million Africans have joined the ranks of the German Overseas Corps, and regularized military training is in full swing in various training camps in Africa and Germany itself, and more than 5 million young Africans who are healthy and willing to accept conscription have been included in the reserve list, and they will also wear military uniforms to join the sequence of German overseas colonies once the war requires.

Through the intelligence gathered by the spies, the Americans felt that they were about to confront the whole of Europe, so they intensified peace talks with the Japanese government and actively courted the Russians in the hope that they would put pressure on Germany from the land. There was no hope of sending troops, but she happily accepted the financial and material assistance provided by the Americans, and made a secret agreement with the American government to stab the Germans in the back if necessary.

As for the Japanese, on the one hand, they were deeply attracted by the prospect of a joint German-Japanese attack on the United States, and on the other hand, they hoped to force the Americans to surrender their colonies without a fight, so they dragged their feet at the negotiating table in a hurry in order to obtain a price more favorable to them.

It was at this time that the U.S. Congress finally passed the long-awaited Elective Service Act for the White House and the military. The bill empowers the president to select men between the ages of 21 and 45 for military service and expands the size of the National Guard, bringing the total strength of the U.S. Army to an unprecedented 1.5 million and more than 1.8 million reservists and militias.

On 17 July, the USS Hawaii, the lead ship of the US Navy's Hawaiian-class battleships, was launched at the New York Navy Yard, attended by senior Washington officials, admirals, and tens of thousands of citizens. 60,000 tons, equipped with 3 twin 45 times diameter 460 mm caliber naval guns, with a maximum speed of 25 knots. The thickness of the armor was almost 1/3 thicker than even the best German battleships. It can be said to be the strongest work of the giant ship cannon doctrine in the 20s, and only the Japanese Mimasaka-class high-speed battleship in design can match it in terms of displacement and firepower, but as a first-class high-speed battleship. Mimasaka-level defense is not comparable to Hawaiian-class.

On the 29th, after nearly a month of preparation, the US Navy held a grand airship exercise in Washington, where more than 500 airships of various types flew over Washington in a way that covered the sky and the sun, and 60 airship carriers also performed light fighters taking off and landing from the air. The United States is fully equipped to deal an invading blow head-on" and has moved away from skepticism and has instead unwaveringly supported the government's defense and armament measures.

After learning about the airship exercise. The German and Japanese governments have had very different reactions. The Japanese Ministry of the Air Force asked the government to allocate additional funds to build more new aircraft carriers in order to change the huge disadvantage of the current 210 Japanese airships in front of the United States and Germany, and the German government's response was relatively cold, and the domestic people paid considerable attention to it, hoping that its air force would be able to deal with these behemoths, and hoped that its own airships would surpass the Americans in numbers and technology.

The midsummer season began in such an atmosphere of vertical and horizontal, open and secret fighting.

Late one night in late July, 32 submarines of the British Imperial Submarine Force quietly sailed out of St. John's Harbour on the island of Newfoundland in southeastern Canada, and since the addition of a large number of American submarines, this former naval outpost has become the second largest submarine base in Canada after Quebec. Only one-third of the submarines are stationed in this port, which has access to the Atlantic Ocean from the port. In order to prevent foreign spies from snooping on the military intelligence of this base, a radius of more than 10 kilometers of this port has been designated as a military restricted area, and not only the aborigines have been relocated, but even the soldiers who have entered the base have been strictly verified.

After leaving the base, the 32 submarines did not disperse their actions, but advanced into the depths of the Atlantic Ocean in the mode of a submarine formation. On the submarine at the head, Major Brandon, the captain of the British Empire, and Lieutenant Commander Hill, an officer of the American task force submarine formation, stood side by side on the control tower. The moonlight was very hazy that night, even the starlight was very faint, and the view on the sea was somewhat blurred, which was relatively favorable for submarines, given the large size of the ships and the considerable advantage of the German navy in this area.

For a long time, neither Brandon nor Hill spoke, and this was the first joint sortie between the American submarine task force and the British submarine force since the arrival of the American submarine squadron in Canada, and 14 American submarines and 18 British submarines of the 32 submarines, although the captains and sailors of these British submarines were the best at surviving the battle against the Germans, but their submarines did not look as good as their secret allies. At present, there are three types of submarines in service in the United States, namely the 850-ton S-class, the 1,100-ton T-class, and the 1,800-ton V-class, of which the T-class submarines have the largest number, accounting for more than half of the total number of U.S. submarines. With a range of 8,000 nautical miles, the submarine can operate in the middle of the Atlantic and even in the central and eastern part of the Atlantic, and is equipped with six 533 mm torpedo tubes and uses the Mk09 torpedoes produced at the Newport torpedo base.

Limited by technology, industrial conditions, and attack tactics, the British submarine force is still dominated by wartime E-class submarines, which have a displacement of 800 tons, a range of 5,000 nautical miles, four 533 mm torpedo tubes, and use MK-08 torpedoes or MK-09 purchased from the United States.

"Major, are you nervous?"

Hill suddenly turned his head and asked Brandon.

Brandon sighed softly, "Maybe! After all, this time I have to deal with a large fleet escorted by 1 battle cruiser, 4 cruisers, 1 light aircraft carrier and 12 destroyers, and to be honest, I am not too sure! Maybe we'll lose a lot of submarines, maybe we'll get nothing, I know it's a bit discouraged to say that, but the worst is still going to be done! ”

"Maybe we'll annihilate them in one fell swoop and create a miracle that none of the Germans have ever done?" Hill set his eyes on the sea in the distance, in addition to the glimmer of the 32 submarines' course lights, countless stars were reflected on the sea, what a beautiful night, what a beautiful sea!

"Lieutenant Colonel, you may not know the Germans, they are not as simple as you think! In fact, I have never fought more than 3 German destroyers, and the most dangerous time was when I was surrounded and intercepted by two German destroyers, and that time I thought I was finished! Brandon's tone was as deep as his mood, and he had a bad feeling that perhaps the Germans were waiting for them ahead!

"But the Germans have never fought 32 submarines at once! We're going to take out their transports, carriers, battlecruisers, and those damned cruisers and destroyers! Hill said confidently, but that confidence would soon be shattered by the harsh reality.

A few hundred nautical miles ahead of this submarine formation, the Germans, who received the intelligence, had long been prepared.