Faced with the Austrian reconnaissance balloon in the sky, the French army was helpless. Ramosilier actually thought of using artillery at the first time, and the problem of insufficient elevation angles was quickly solved.

The elevation angle of the gun itself is not enough, which can be solved by artificial ramps or elevated launch pads.

However, these can't solve the biggest problem, and that is the lack of shooting height.

At this time, most of the French artillery ranges between 800 and 1200 meters, but most of them shot at a height of less than 300 meters, even the height of the M1841 Napoleon Jr. was less than 400 meters.

If solid shells are used, the firing height of these guns will be further reduced. And the hot air balloon in the air is a black spot for the gunner on the ground, even if the range is enough to hit, it depends on luck.

The Austrian Empire's reconnaissance balloons usually flew at an altitude of about 600 meters, which fundamentally cut off the possibility of the French artillery shooting down the reconnaissance balloons.

As for why the flight altitude is only about 600 meters, it is not that the technology of the Austrian Empire is not good, but that no matter how high the altitude is, it is not conducive to reconnaissance.

The visual distance of ordinary people is usually no more than 500 meters, and even the distance from which they can distinguish the scenery is usually no more than 800 meters, even if they are specially selected lookouts.

Of course, Franz could not fight on the natural talents of these men, and each hot air balloon was equipped with a fixed three- or six-fold military binoculars for detailed observation.

At this time, the Austrian Empire was far ahead of other countries in the field of optics, so why were the telescopes equipped with triploxes and sixfold mirrors, while the local governors of the Ming Dynasty during the Wanli period used nine-fold mirrors or even twelve-fold mirrors.

First of all, military telescopes and astronomical telescopes are used for different purposes, one is to quickly understand the situation on the battlefield, and the other is to explore the universe.

Too high magnification is also not good for observation, because the magnification is inversely proportional to the stability of the image, and the larger the magnification, the worse the stability, the smaller and darker the field of view, and the image shake caused by it is also greatly increased.

The ten-fold used by Germany and France during World War II usually needs to be fixed with a bracket before it can be used, and the so-called ten-fold mirror, also known as the scissor telescope, is actually a submarine periscope.

What's more, at this time, the countries around the world are still using old-fashioned monoculars, the advantages of this telescope are simple structure, low cost, but the disadvantages are also obvious observation field of view, small field, not conducive to observing dynamic targets, easy to make users tired.

The binoculars designed by Franz are completely free of these problems, and coupled with the development of photographic technology, it is not unfamiliar to scientists in Austria, after all, eating, drinking and being merry is the driving force of human beings.

In fact, Franz wanted 7x binoculars, after all, 7x mirrors are the most suitable for human physiology.

However, due to the lack of too much front-end technology, coupled with some small problems in the industry, the cost of the 7x mirror at this time is much higher than that of the six-fold mirror and the nine-fold mirror, so Franz can only use the six-fold mirror instead.

At this time, the altitude of the reconnaissance balloon above the ground is usually only about 600 meters, and the observation distance is usually within 1,000 meters, so the six-fold mirror is more than enough.

The one-way transparency of the battlefield to the enemy was intolerable to any commander, so Ramosirier raised his own reconnaissance balloons.

As the first country in the world to use hot air balloons for military purposes, the French military has a very complete system, they will dig a support trench behind the army position, and then release the reconnaissance balloon.

Albrecht didn't have Franz's kind of artillery that was specifically used against the air, but that didn't bother the famous general.

True masters can quickly spot and exploit enemy weaknesses, and the French have long cables hanging under their reconnaissance balloons, which is their fatal weakness.

At this time, most of the records and designs for the study of hot air balloons were set by the French, and in 1804 the Frenchman Guy Lussac flew to an altitude of 6,900 meters, a record that was not broken by the British until 1862.

But no matter how high the French balloons rise, if they break the leash, they will be doomed.

The French are not idiots either, as mentioned earlier, they even dug support trenches to prevent this from happening, just to prevent the cables from being blown up by enemy artillery fire.

But they ignore a problem, breaking the cable does not necessarily have to be fried, but can also be burned. Times have long since changed, and arson weapons have come a long way compared to a few decades ago.

And thanks to the advent of Franz, rockets were widely used on the battlefield, as well as the development and research of oil, which led to the Austrian army being alone in arson.

A large number of heavy rockets mixed with petroleum derivatives fell near the French support trenches, and the raging fire soon turned the French reconnaissance balloons into broken kites, and the French army was once again blind.

However, humans have a strong ability to learn about warfare, and Ramosirier quickly figured out Albrecht's tactics and wanted to replicate the success.

However, after sacrificing several groups of excellent scouts, the French still did not find the safety rope of the Allied hot air balloon, and Ramosirier had no choice but to give up.

He only hated that there were no real warriors in his army, and what he didn't know was that Austria's new hot air balloons had no safety ropes at all.

This was not a problem for the Austrian Empire, which could build empty ships, to build a few hot air balloons that could control the direction.

But it didn't take long for Albrecht to find out that the previous methods of simulated training were not easy to use in real combat.

Due to the influence of the wind, the hot air balloon is always in constant motion, and if you want to keep the reconnaissance balloon from moving away from the battlefield, you have to constantly adjust the direction, which greatly increases the difficulty of operation and observation.

As a result, the team of detecting the balloon was increased from two to three, and one operator was added to adjust the direction, and the other two were responsible for lookout and one was responsible for conveying information to the ground with flags.

However, it didn't work out well, not only did it increase the fuel consumption, but it even made the operability worse.

Finally, on the fifth day after the start of the war, the Austrian military adopted the French method and used safety ropes to secure them.

However, by this time Ramosilier had given up on his plans to shoot the Austrian scout balloon, and he only planned to defend Salburg in the days that followed and wait for other roads to break through.

At this time, the Austrian reconnaissance balloon was still hanging over the French position like a sword of Damocles, and after confirming that the French artillery was suppressed, the Allied infantry brigade finally began to advance.

The advance of the brigade was a very clear signal for the offensive, and Ramosirier sent troops to fill the front line.

However, he did not send many troops, after all, the hot air balloon in the sky would send a signal to the German allied positions at any time.

At this time, Ramosilier had fully appreciated the power of the Austrian artillery, and he did not want to be lured out of the hole by the Austrians, and then blow up.

Moreover, according to the French textbooks and materials, the tactics of the Austrian army were usually very tepid, and they would order the miscellaneous troops in the army to make continuous tentative attacks, and then adjust their tactics according to the enemy's reaction and firepower until the enemy showed a flaw.

Although the writer had never been on the battlefield, what he wrote convinced every French officer, and even a veteran of the Napoleonic Wars thought he must have lived through those battles