In the Mexican highlands in August, the autumn weather is crisp and the weather is very good. From the end of April to the end of the Battle of Columbia, in the following months, the squadron was resting and replenishing its troops, as well as various equipment and other combat materials. In particular, the tanks and armored vehicles of the armored forces suffered heavy losses, and it was necessary to replenish all of them before launching the next large-scale offensive.

In the Central Campaign, the armored forces played an extremely strong role in both breaking through the US defense line and outflanking the rear of the US army. It's just that the losses are also huge. Most of the armored vehicles are scrapped because of the destruction of key parts. In addition, the light warships and submarines of the West Coast Fleet of the United States launched a fierce attack on the sea transportation line from Hawaii to Mexico, so that a number of transport ships transporting tanks and armored vehicles and spare parts were sunk, and transport ships transporting fuel and ammunition, especially aerial bombs, also suffered heavy losses. Under such circumstances, the squadron in Mexico had to stop the pursuit and began to stock up on supplies.

In order to delay the pace of the squadron's attack, in the United States President Theodore . Under Roosevelt's strict orders, all the light warships and submarines of the US West Coast Fleet were sent out to wait for an opportunity to attack the Chinese Navy's transport ships in the vast waters of the East Pacific. Submarines, in particular, pose a great threat to China's sea transport lines. Even though the technical level of submarines of the US Navy is very backward, this weapon hidden underwater is still not easy to detect. Once a submarine breaks into a convoy, it can cause great damage to the convoy. Of course, once these submarines attacked, they were often sunk by the destroyers or light cruisers that arrived after they were exposed. But even so, the squadron will pay a lot of losses for it. The submarines of the Americans are far from being comparable to the transport ships, not to mention the fact that the transport ships are full of all kinds of equipment, ammunition or fuel.

In order to ensure the army's operations in Mexico, the emperor Wang Yuze issued an order to the navy, requiring the navy to ensure the safety of the transportation line, and if there was an accident in the Mexican battlefield due to the problem of the transportation line, the navy would be responsible for this. Under pressure from Wang Yuze, Navy Minister Zhang Cheng also ordered the navy fleets in the eastern Pacific to step up the encirclement and suppression of light warships and submarines of the US West Coast Fleet.

For a time, more than half of the main forces of the Chinese navy gathered in the eastern Pacific Ocean were engaged in encircling and suppressing US warships and submarines. This lasted for more than two months before the warships and submarines sent by the US military to the eastern Pacific were eliminated. In addition, not all of them were wiped out, and there were always some light warships and submarines that were lucky enough to escape the encirclement and suppression, and from time to time they would still attack the convoys. However, as long as the transport fleet is equipped with enough escort warships, there will be no problems.

In any case, although the US West Coast Fleet suffered heavy losses under the encirclement and suppression of the Chinese Navy, more than 80 percent of all light cruisers and destroyers were sunk, and only a few submarines remained. However, it also bought the United States enough time. The U.S. Army took advantage of the temporary inability of the squadron to launch a large-scale attack, and built a defensive line in northern Mexico, which relies on the Sierra Madre Oriental, the Panuco River, the Santiago River, and the Sierra Madre Occidental, in the south-central region of the Mexican Altiplano, with San Luis Potosí as the core. The U.S. military has deployed millions of troops on this line of defense. This line of defense, also known as the last line of defense by the Americans. Once the squadron breaks through this line of defense, to the north is the Mexican plateau, which is basically a dangerous terrain that can be defended, and can break through to the Rio Grande on the border between the United States and Mexico. After crossing the river, you will find Texas in the southern part of the United States.

In order to ensure the security of the homeland, the United States has sent most of its army to the southern border, preparing to rely on the wide Rio Grande for a final resistance. The defense line in northern Mexico was to buy enough time for the defense of the continental United States, and no American wanted the flames of war to reach the continental United States. So, even though the Army lost in central Mexico, there were still many Americans willing to join the army to resist the Chinese invasion and protect the United States. The U.S. Army's recruitment has also eased conditions to allow American men between the ages of 15 and 45 to join the military, nearly doubling the U.S. Army's military base. Much of the manpower needed for industrial and agricultural production is taken over by women. In order to win this war, or to resist China's invasion, the United States is already planning to do everything in its power.

By the time the time it was August, the squadron's preparations had been completed. Millions of squadrons have completed their rest. The Japanese and North Korean mercenaries, who had suffered heavy losses, had also been replenished, with all types of artillery, tanks, armored vehicles and aircraft in place. Play! Medicine, fuel and food have also been prepared. Also, the weather was very nice. Therefore, Marshal Zhao Bowen, the supreme commander of the China-Mexico battlefield, the Minister of War, was ready to start an attack on the American army, driving the American army out of Mexico and attacking the United States in one fell swoop.

Querétaro, just 180 kilometers from San Luis Potosí, the core of the U.S. defense line, has become the headquarters of the squadron. Four army groups and sixty infantry divisions, with more than 1.7 million squadrons, were deployed north of Querétaro. 500,000 Japanese mercenaries and 200,000 Korean mercenaries are also in place. To the north of Querétaro, more than 20 field airfields of all sizes were built to dock hundreds of fighters. At present, the Chinese Air Force has sent three wings of fighters to the battlefield in Mexico, with a total of 360 aircraft.

On the evening of August 21, Mexican time, Marshal Zhao Bowen summoned the generals on the Mexican battlefield and began to deploy before the war. The commanders of several army groups, as well as the heads of the air force, as well as the commanders of the Japanese and Korean mercenaries, were also present.

"Ladies and gentlemen, the battle plan we submitted has been approved by the General Staff. The troops on the front line have also been deployed, and two days later, on August 23rd, we will launch an attack, breaking through the so-called 'last line of defense' of the Americans in one fell swoop, and bringing the flames of war to the United States! Marshal Zhao Bowen said. The previous war between China and the United States has been going on in Mexico, although the US Army has suffered heavy losses, but it has not dealt a big blow to the United States, especially to the strong industrial strength of the United States. This allows the United States to arm a sufficient number of troops in a short period of time with its strong industrial strength. Therefore, if we want to defeat the United States, we can only completely destroy the United States by attacking the territory of the United States and destroying the industrial base of the United States.

Everyone looked at Marshal Zhao Bowen, and their eyes were full of eagerness. After a few months of rest, the squadron is already strong. Although the Americans spent several months building their final line of defense, the U.S. military apparently did not expect to be able to rely on this line of defense to withstand the squadron, and only about a million troops were deployed on this line of defense. The rest of the army had withdrawn to the country, and a new line of defense had been formed on the north bank of the Rio Grande. The Rio Grande defense line is the line of defense that the U.S. military is really prepared to hold, and the defense line in northern Mexico is only used to delay time.

"Marshal, let's take charge of the main attack with our army! I promise to break through the U.S. defense line in one day, take San Luis Potosi in two days, and completely destroy the U.S. defense line! General Xie Dingkun, commander of the 2nd Army, said immediately. In the battle of central Mexico, the 2nd Army's lost tanks and armored vehicles had been replenished, which made General Xie Dingkun full of confidence again.

"Marshal, our 8th Army guarantees to take San Luis Potosí within 1 day." The commander of the 8th Group Army, General He Bingju, also said immediately. The commanders of the other army groups also scrambled. Although the U.S. military defense line was strong, these generals had great confidence in their armored forces, believing that they would be able to break through the U.S. defense line with the same ease as they did in the Battle of Central Mexico.

"Everyone, be quiet. Although, the US military deployed only a million people on the front line of defense.

However, due to the favorable terrain, more than 70 percent of their forces are deployed in and around San Luis Potosí. The U.S. military suffered enough from the armored forces last time, and this time they are already prepared, and we can't be careless! Marshal Zhao Bowen said sternly. He didn't want these generals to have no one in their eyes after many victories, with the arrogant mentality of Lao Tzu being the best in the world.

The generals of several army groups are really like this, in their opinion, the defense line of the American army is completely like paper, and as soon as they attack, it will crumble.

"According to the information we have received, the US military has dug anti-tank trenches specifically in and around the positions in San Luis Potosí. These trenches are up to three meters wide and one and a half meters deep, which neither our tanks nor armored vehicles can cross. In addition, according to information received by the intelligence services, the US military has been equipped with anti-tank weapons, but it is not known how powerful it is. Therefore, the General Staff asks us to be vigilant this time and not to carelessly fall into the way of the Americans. Marshal Zhao Bowen warned.

Hearing Marshal Zhao Bowen say this, everyone looked up to it, and their expressions became more solemn!