Many of the weapons in the base are non-mainstream weapons that deviate from the original history.

The birth of these weapons is a miracle born by the leap of the spark of thinking in countless time and space, and if you rely on ordinary research methods, I am afraid that you will really have to fall into countless money, time and energy to test the right path.

Just like the base gunship carrying the cannon that Meng Xiang threw out in advance, even if Meng Xiang wanted to break his head, he couldn't figure out how it could eliminate the impact of the huge recoil. So Meng Xiang didn't hesitate to show it up, and from time to time he showed his huge attack ability under the noses of the Americans, wishing that the Americans would come to the cottage and fall into this big pit.

Obviously, with facts as a basis, the Americans who have tried the power of helicopter gunships are already tempted.

However, the Americans, who started the secret program, did not show it in the Pentagon's five programs. Except for the first jump to make Meng Xiang happy, the other four gave Meng Xiang a little headache.

But any big country will not be easily fooled.

If it weren't for the successful example of China, the Americans would not easily fall into the pit in some projects.

Even though the Americans have already joined the army, they still rationally start other backup or auxiliary plans, and even start research from several directions in parallel. Even if one direction is wrong, there is always one or more directions that can be taken in the right direction.

This is where the strength of a great power lies.

In particular, a country with deep pockets like the United States, which has gradually walked in the forefront of the world's scientific and technological trend after World War I, needs to explore this way in multiple ways to maintain its leading position, rarely bet on one direction, and thus has a stronger ability to resist risks.

So in the first plan of the Pentagon, there is a study of the Supermaster tank that will continue to maintain the traditional orientation, and in the second plan, there is also a proposal to expand the number of Overlord tanks produced.

After realizing that it would be difficult to surpass it in a short period of time, the United States immediately brought into play its advantage of being the world's largest in industrial production and intended to overwhelm the Chinese in terms of quantity.

Americans are not stupid, they know what their advantages are, not to mention Huaxia, which has a very weak industrial base, even if it is a copycat company. That sneaky look. I have not been able to find the location of the specific production base, and I am afraid that the scale of production will not be too exaggerated.

Even though the Americans still lag behind Britain, France, Germany and other old European countries in some technologies, the United States steadily occupies the first place in terms of total industrial volume, and even has a tendency to overwhelm all other countries.

Relying on this numerical superiority was the main pillar of the United States' hegemony in World War II in its previous life.

For example, tanks. No matter how powerful the Tiger King and the Black Panther of the Germans were, they were still beaten back by a large number of Sherman lighters.

Moreover, the performance of the Overlord tank has surpassed the T-54/55 tank, which is the most equipped tank in China, as well as the first-level Grizzly Bear and Rhinoceros, but it is only slightly inferior to the newly emerged second-level Grizzly Bear and Rhinoceros.

The Americans judged that the number of second-class grizzlies and rhinos would not be very large, and the number of fights could be completely overwhelming, even a large number of Pershing or Super Pershing tanks could do it.

Previously, the Americans had been experimenting with various new tanks. The mainstream tank has not been determined, and since the Overlord tank is already the best option in the current conditions, the Americans did not hesitate to immediately develop plans for mass production.

They used numerical superiority to deal with the Germans very early, but against Huaxia, which they had always looked down on, they couldn't help but want to overwhelm Huaxia in high performance and high-end technology.

After repeated setbacks, the enlightened Americans finally found their magic weapon again.

The Pentagon's third option also relies on numerical superiority.

But this one is about airplanes.

The Americans understand that without air supremacy, it is difficult to win on the ground.

After realizing that the performance of jet aircraft is difficult to beat Huaxia. The Americans had early plans for a massive attack by the Air Force. It's a pity. That time, there were many external factors that led to the failure of the plan.

But now in Canada, many unfavorable factors are pressing on China. However, the United States, which participated in the war at close range, was able to rely on the right time, place, and people.

The problem of the airport, after leaning towards the continental United States, is easy to solve.

The Americans could easily find hundreds of airfields from the continental United States to launch large-scale attacks, but Huaxia, which occupied only a few airfields in Canada, needed to find more suitable places to build field airfields in the cold regions of northern Canada.

Even if the airport is found, the lack of ground staff and command personnel will make China a mess. And this time, the airports in the United States that have been in operation for a long time can organize a 24-hour overtime schedule at any time, and even redundant.

And this time, there is no need to fight across the ocean, there is no need to cross the vast sea area that is easy to get lost, and the Americans can easily draw out tens of thousands of short-legged fighters and tens of thousands of pilots.

The advantage of being close to the mainland made it easy for the Americans to mobilize sufficient manpower and material resources to launch a continuous large-scale offensive, so as to avoid the lack of logistics as in the first air force organization.

And this time, another plan for a large-scale air attack is also being organized, but in view of the failure of the last one and the whole grand strategic background of luring the enemy deeply, this attack by the Americans has not yet been finally launched.

However, under a series of pressures brought about by the rapid advance of the Chinese armored forces, the Americans' air counterattack was about to begin again.

If it weren't for Meng Xiang's reliance on the sub-base, in turn, most of the disadvantaged conditions accounted for the Huaxia victory rate was slim. Even if Meng Xiang still has hole cards in his hand, the price is very huge, enough to give people a headache.

The closer it is to the continental United States, the better it is for the Americans, and the worse it is for China.

Wars from ancient times to the present day have taken into account the difference between home and away games. Roosevelt also calculated this at the beginning.

And this is not only evident in tanks and airplanes.

The convenience of manpower and material resources allowed the Americans to build strong fortifications on the border between Canada and the United States in a short period of time. Even in the Pentagon's fourth plan, the fortifications were to be extended to the southern bustling part of Canada.

The British have agreed to this form of support from the Americans, and even Canadian resources are tilted in this direction.

Although it was not enough to build a Maginot line in a short time, the countless fortresses and trenches and mine arrays were enough to slow down the Chinese army's march.

One of the reasons for the rapid advance of the Chinese army in northern Canada and Alaska was the harsh environment, the few towns along the way, and the weak resistance encountered.

It was also difficult for the Allies to fully defend themselves in sparsely populated areas.

But the more you advance into Canada's southern bustling area, the clearer the defense objectives are, and the stronger the resistance pressure in the surrounding areas.

The wooden houses in the north have gradually been replaced by reinforced concrete buildings in the south, and even in some strategic places, a city may be able to hold back the Chinese army like Stalingrad.

In the city, the tank armor of the Huaxia was greatly limited. Short-range weapons, such as recoilless guns and bazookas, which are difficult to use effectively in the wilderness, can pose a great threat to the weak points of the Chinese tank in narrow environments such as cities or fortress positions.

The Americans also understand this and even explicitly stated it in the fourth scenario. It's just that Canada is British after all.

Churchill readily agreed.

As World War II progressed, there were fewer and fewer undefended battles like those in Paris, and more and more brutal street fighting. Even on the British mainland, street fighting between the Germans and the British has shattered many cities, including London, not to mention the second-rate cities in Canada.

Moreover, Churchill understood better that there was value in sacrificing these cities.

Those civilian constructions and even those fortress fortifications can even be piled up with reinforced concrete soil without the need for an army. A large number of Allied troops could still remain in Europe, taking advantage of the delay in these lines to completely deal with the Germans and pacify Europe. The British can sit back and watch the Americans and China pinch each other with peace of mind.

In the face of layers of defensive fronts, the Chinese chariots, which had advanced thousands of kilometers in the wilderness, were finally about to encounter a Western-style people's war.

If these lines of defense only hinder the advance of the Chinese army, the fifth plan launched by the Pentagon may directly threaten the entire Chinese army.

When the Americans no longer competed with China in high technology, the old king of war played the leading role again.

The German blitzkrieg had many hits in Soviet Russia, but the artillery doctrine that encountered the Russians was certainly one of the important points.

Artilleryism has penetrated into the bones of the Russians, and even their tank group tactics need the support of fierce artillery.

Relying on communications and other means, the Americans' artillery support in World War II was very well placed, but their demeanor in World War II was overpowered by the crazy Soviet Russians, and even by their own navy and air force, and even the edge of the emerging king of land warfare tanks.

Most Americans fought on expeditionary missions, and it was easier to use planes, tanks, and navies. Many of the cannons they produced were sent to Europe as munitions, and in many battles with China, the power of artillery fire was never fully realized.

This time, the Americans have finally come to their senses.

In the fifth plan, relying on the advantage of the homeland, the Americans decided to deploy 100,000 large and small artillery pieces of more than 37 mm caliber in Canada and the US-Canada border.

"Artillery fire can wash away all shame!" Roosevelt's final decision for this plan shocked Meng Xiang a lot of headaches. (To be continued.) )