Igor Pass, the squadron's attack on the US army continued, and under the bombardment of the Chinese airspace, the 64th Infantry Division of the US Army stationed in Igor Pass was simply unable to provide effective support to the front line. Before the squadron attacked, the 64th Infantry Division of the US Army left most of its forces in the city, and only deployed one regiment of troops on the riverside defense line. After the battle began, the regiment was heavily bombarded by hundreds of heavy artillery pieces of the Chinese army, and although it lasted only five minutes, it still caused considerable losses to the regiment.

After the fire of the heavy artillery units of the Chinese Army was extended back, the Chinese Air Force group joined the attack on the American regiment. At this time, these American troops had just come out of the anti-artillery holes and were preparing to launch an attack on the 141st Regiment of the Chinese Army, which was crossing the river. Under the bombardment of the Chinese Air Force, the regiment suffered heavy losses. The battle had barely begun, and they had lost at least a third of their troops. The remaining troops also had to brave the strafing and bombing operations of the Chinese Air Force, and their combat effectiveness was also greatly hit.

Other units of the 64th Infantry Division of the US Army, deployed in the city of Igor Pass, by order of the division commander, began to reinforce the front. However, by this time, the heavy artillery units of the Chinese army had already extended their fire to the city of Igor Pass. The reinforcements sent by the U.S. Army to the front line, if they want to reach the front line, they have to pass through the artillery interception of the heavy artillery units of the Chinese army.

This kind of artillery fire will deal a great blow to the US military. Often a battalion of reinforcements departed, and by the time they passed through the barrage of shells, there might be only half or even less left!

At 7:22 a.m., the first boat docked on the north bank of the Rio Grande. More than a dozen Chinese soldiers jumped from the boat and attacked the American lines. However, a volley of bullets flew over, and several soldiers fell to the ground on the spot. The rest of the soldiers also hurriedly lay on the ground. At this time, the light machine gun mounted on the bow of the ship also began to strafe to provide fire support for the comrades who landed on the shore.

As more and more small boats docked, more and more Chinese soldiers began to attack the U.S. line. There is also increasing pressure on the US troops on the defensive line. The defense line, which originally belonged to a division, is now defended by only one regiment, and the follow-up reinforcements cannot come up. The consequences of this can be imagined.

At 8 o'clock in the morning, the 141st Regiment of the Chinese Army attacked the positions of the American troops and began to clear the American troops on the positions. The resistance of the U.S. military is also very fierce, and the two sides will even break out from time to time in white-knuckle battles. However, when all the troops of the 141st Regiment landed on the shore, the American troops, who were inferior in terms of firepower and strength, could no longer resist the advance of the squadron. By 9 o'clock, the squadron had completely defeated the defense line outside Igor Pass. The U.S. 64th Infantry Division also retreated back to the city to defend itself.

At this time, the 142nd Regiment of the Chinese Army began to cross the river. At the same time, sappers also began to build pontoon bridges. In order for the 2nd Army, the 6th Army, and 10 other infantry divisions to cross the river with all their personnel and equipment, the sappers had to build at least ten pontoon bridges over the Rio Grande, half of which had to be reinforced so that tanks, armored vehicles, trucks, and heavy artillery could cross the river. After all, the capture of Igor Pass was followed by an attack on San Antonio. The assault of 200 kilometers in two days was only possible with armored forces. If the infantry relied on their legs, they would not be able to complete such a long-range assault at all!

At half past nine in the morning, the 141st and 142nd regiments of the Chinese Army launched an attack on Igor Pass. Under the joint attack of the heavy artillery unit of the Chinese Army and the Air Force, the 64th Division of the US Army holding on to the city had already suffered heavy losses, and it was even more difficult to resist after being attacked by the squadron. Even though they built a lot of fortifications in the city, these fortifications did not become a guarantee for the American army to turn the tide of the war under the attack of the squadron that occupied an absolute advantage.

Later, the 143rd Regiment of the Chinese Army also crossed the Rio Grande and joined the attack on the 64th Infantry Division of the US Army. The addition of the new force further improved the combat effectiveness of the squadron, and the reinforcements of the American army were delayed, which made the morale of the 64th Infantry Division begin to drop sharply. At 11 o'clock, the commander of the 64th Infantry Division of the US Army had to give the order to retreat, abandon Igor Pass, and retreat east with a few thousand remnants of the defeated general. Otherwise, they will most likely all be left here.

After the retreat of the American troops, the squadron did not pursue, but built a defensive line around Igor Pass, preparing to meet the counterattack of the American troops. At the same time, large forces of the 2nd Army also began to cross the river. Before the pontoon bridge for the sappers was completed, it was only possible to transport people there in small boats. Heavy equipment such as tanks and artillery could only remain on the south bank of the Rio Grande.

At two o'clock in the afternoon, two pontoon bridges had already been built, and at this moment there were 6 under the jurisdiction of the 2nd Group Army of the Chinese Army! Three of the divisions had already crossed the Rio Grande and moved into positions to prepare for a counterattack by the Americans. After the pontoon bridge was built, the heavy weapons of the squadron began to cross the river one after another. The 2nd Panzer Brigade of the TP'Wolves, light tanks and armored vehicles began to cross the river. As for the TB' Cheetah, medium tanks, they had to wait until the pontoon bridges built by the sappers for heavy equipment were completed. The 2nd Army's battle plan included two TP' wolves, light tank battalions, and two mechanized infantry battalions attacking San Antonio if the TB' Cheetahs and medium tanks were unable to cross the river in time. And the 6th Armored Brigade of the 6th Army set off a little later.

At half past two in the afternoon, the other three infantry divisions of the US 16th Army arrived late, but when they discovered that the main force of the Chinese Army's 2nd Army had crossed the Rio Grande, they immediately stopped advancing. Not only did not launch an attack on Igor Pass, but began to retreat back. If Igor Pass's defense had not fallen, they might have dared to rely on a strong position to defend themselves against the attack of the squadron. But now that the defense line has been seized by the squadron, let them attack, what is the difference between letting them go to death?

The U.S. military did not take the initiative to attack, but the squadron would not let them stay here. Under the orders of General Xie Dingkun, commander of the 2nd Army, the 14th, 21st and 25th Divisions took the initiative to launch an attack on the American troops. In the face of the attack of tens of thousands of squadrons, the US army did not dare to resist at all and retreated one after another. This allowed the squadron to cross the river in Igor Pass without any repercussions.

At 4 p.m., a specially built pontoon bridge for Guòtb' Cheetahs, medium tanks, had been erected. A battalion of 72 TB' Cheetahs, medium tanks, took an hour to get to the Guò pontoon. And by this time, two TP' wolves, a battalion of light tanks and two battalions of mechanized infantry were ready.

At 5:25, Admiral Xie Dingkun gave the order to march to San Antonio. The Army's 211th and 212th Regiments, consisting of the 2nd Armored Brigade and nearly 300 trucks from the Drawn Army, began their march along the road towards San Antonio. The roads in the United States are relatively well built, which greatly facilitates the attack of the squadron.

At this time, the pontoon bridge built by the sappers had been completed, and the remaining squadron ** team also accelerated to cross the river. The 6th Armored Brigade of the 6th Army crossed the river at 7 p.m. After that, the assault force, consisting of the 6th Armored Brigade and the 111th and 112th Regiments transported by truck, also began to march towards San Antonio. After all, according to the intelligence received by the Chinese side, the US military has deployed at least two corps in San Antonio. If the U.S. military can return in time, then the squadron will face more U.S. troops. With one armored brigade and two infantry regiments alone, it is simply impossible to capture an important city garrisoned by 100,000 American troops. The two armies set off in front and back, only two hours apart.

By the time the 6th Panzer Brigade departed, the 2nd and 14th Divisions of the 21st Army had already marched towards San Antonio. It's just that the speed of the infantry is slower and cannot be compared with the armored forces at all. The Cheetah, a medium tank, also has a top road speed of 28 kilometers per hour, and the entire assault force is advancing at a speed of 5 kilometers per hour, and it would take only 13 to 14 hours to reach San Antonio from Igor Pass.

Of course, in practice this is not possible. It is impossible for tanks and armored vehicles to march such a long distance at one time, and after a certain distance of assault, it is necessary to refuel tanks and armored vehicles, and even repair damaged tanks and armored vehicles, etc. This will greatly slow down the speed of the armored forces. But even then, much faster than the infantry.

The assault force, composed of two armored brigades of the Chinese Army, struck San Antonio from Igor Pass one after the other. Huge convoys of tanks, armoured vehicles and trucks form a long queue on the road. The torrent of steel machinery, with an unstoppable momentum, rushed towards San Antonio, the most important supply base behind the American Rio Grande Line!

The assault force formed by the Chinese Army did not rush overnight, but when the US military found the two assault units of the squadron, it was already KO o'clock on the morning of October 26. At this time, the 2nd Armored Brigade of the Chinese Army was only a little more than a hundred kilometers away from San Antonio, and they had already covered half the distance. If nothing else, expect to be in San Antonio by late afternoon. Such a result shocked the entire US military!