Seeing that Duke was so determined, Vesalius didn't say anything more, and after changing a needle and hollow holster, he inserted the needle into Duke's blood vessels and began to transfuse Cassel's blood.

Truth be told, Duke didn't have any resistance to donating blood, but he was deeply skeptical of the Veisalius device. This guy has all the needles, and after high temperature and alcohol disinfection, it shouldn't be a big problem.

But this body holster, Duke has so far not recognized how to do it. After all, the world's rubber and petroleum processed products have not yet come out, and the latter kind of disposable infusion tube cannot appear. Duke is really afraid that there is something wrong with this thing, and it will be okay to donate blood by himself at that time, because this thing has caused some blood infection, then it will really be dead and blind.

However, in this case, Duke couldn't ask Vesarius anything, so he could only hold on. Feeling the blood flowing through my body, the feeling of weakness and coldness caused by the loss of blood also followed.

It's just that Duke can't show his weakness, and he still has a normal expression. After all, this technology will definitely be promoted in the entire Storm Fort in the future, and the highest mortality rate in cold weapon warfare is blood loss and infection, and if a problem can be solved, then the life safety of the Storm Fort soldiers will also be greatly guaranteed in the future.

Looking at Duke's calm appearance, everyone present was extremely moved. After all, you must know that this is a nobleman and a lord, but he is willing to take the risk of taking the initiative to transfuse blood for the life of a subordinate.

This was an incredible thing in the Middle Ages, even if Cassel was a knight, but absolutely no noble lord would make such a sacrifice.

Because of Duke's attention to his subordinates, the two medical students standing next to him couldn't help wiping their tears. Just now, the lord chose to transfuse his own blood in order to take care of their bodies, and this kind of care was even more touching for the medical students of the civilian class.

Nicole's face was even more tear-stained at this time, she had always regarded Duke as her savior and protector, and she also knew Duke's care for her subordinates. But she hadn't thought before that Duke could do this for the sake of her subordinates. It can be said that meeting such a lord is the luckiest luck in life for a witch like Nicole.

As a large amount of blood flowed into Cassel's body, his previously declining body temperature and heartbeat finally began to stabilize, at least not worsen. And the white skin on his body finally looks a little bloody now.

You must know that just now, at least 1,200 milliliters of blood were transfused into Cassel's body, and you must know that the total blood content of an adult is only more than 4,000 milliliters. It is equivalent to replenishing a quarter of the blood in Cassel's body.

But even so, there should be a blood gap of about 1,000 milliliters on Cassel's body. After all, the injuries on his body were too serious, and the transportation to Storm Castle was also in a state of constant flow.

The blood gap of 1000 ml is still in a dangerous state for ordinary people. However, with the existence of such a magical thing as Cassel's physique and fighting spirit, at least he will not die due to lack of blood.

As for whether Cassel can survive or not, it is still the old saying, and he can only resign himself to fate. Duke had already done the most advanced medical rescue method in this era, and he was even confident that unless it was a magician of the level of the Holy See and used the magical Holy Light Life-Sustaining Therapy, Casso's injury would be a death or death anywhere on the continent of Europa. To exaggerate, it is not impossible to die without life.

After dealing with Cassel's injury, Duke also felt a kind of dizziness, and even stumbled when walking. This is not only because of the feeling of weakness after donating blood, but also because there is a huge mental pressure, because the casualties in the battle of Stormcastle can be very heavy.

At the same time, Duke also regretted his previous decision-making mistakes, that is, he still did not avoid the bad problem of being ambitious, and looked down on firearms such as bronze earth cannons, and simply wanted to quickly improve the technology tree of the musket to make up for the lack of long-range attack methods in Storm Castle in the future.

In fact, in all seriousness, Duke made such a decision for a very practical reason. For example, the front-loading smoothbore gun, in terms of production difficulty, can be said to be simpler than the front-loading smoothbore gun developed by Duke, cutting corners and even not needing to bore the barrel, just cast it in mud.

But the problem is that like the primitive bronze trot, even the more advanced iron cannons and steel cannons, they are not out of the range of mortars. Under the firing of primitive black powder, the firing range of this cannon is generally in the range of a few hundred meters to one kilometer, and there is no such thing as flowering shells at this time.

If it is placed in the Middle Ages of a normal cold weapon, this kind of range can basically be used, basically much longer than the range of any bow and crossbow, and it can also kill in a range, which is still very practical.

But the problem is that this is still a world with all kinds of weird magic and other races' long-range attacks, and under the precision guidance of magic, the musket troops can disperse as quickly as possible, and can avoid huge casualties as much as possible.

Even if it is a dense formation of guns, it can fight for enough evacuation time in addition to the chanting time of large magic, or the interference of one's own magicians. As long as you survive the difficult task of loading the smoothbore in front of you, you can enter the war as a skirmisher and no longer need to use magic to kill large areas.

But artillery is different, with the smelting technology of this era, even if it is to create the lightest artillery, it is estimated that it is more than 100 catties, plus what kind of gun cart shells and so on, it is normal for a gun to have a weight of several hundred catties.

Moreover, if the artillery wants to exert its maximum power, it must be fired together for so long, which is the so-called artillery array effect. And this kind of artillery array, in the face of magical attacks, is simply a target, and it is very difficult to evacuate or transfer quickly like a musket with a weight of several hundred catties.

If this is the case in actual combat, and the artillery position built at the cost of huge manpower, material and financial resources is completely wiped out without even seeing the shadow of the enemy, then it will really be broken, and the financial resources of Storm Fort will not be able to support such an act.

Therefore, because of his fear of magic, Duke has never developed artillery. He thought that after the rifling process or post-loading technology matured, he would apply these technologies to the artillery, and directly create a cannon at least the level of the Opium War, so that he would also have a certain resistance and defense ability against magic and other races' long-range attack methods.

But judging from the current results, Duke's idea is undoubtedly wrong, because at this stage, his biggest enemy is not the powerful Holy See, but some weak opponents who are on a par with him!