Similar to the Ming army many years earlier, the Safavid army, which had less experience in fighting Western armies, was somewhat more backward in terms of firearms. Although some of the most basic rules and ways have been touched, for example, when the manufacturing process is not very strong and the quality of the army is not very high, the field gun in the light grenade mode can play the greatest role in combat. Just as the Ming army was once widely equipped and played a role in the second general and the third general, the Qing army in the Taiping Heavenly Kingdom era could also make each battalion play a core role in firepower with only a few mountain splitting guns.

However, when facing a team like the main elite led by Xiao Xuan, the limitations of this kind of artillery were exposed to a large extent, that is, it could achieve a good killing effect when facing an opponent who did not have too perfect armor protection. However, against opponents who have considerable protection against blunt damage, they are largely powerless. According to the previous tests of the army in the Yingtian area, the threat is widely equipped with the top material level light plate armor or the middle and upper level medium plate armor of the new guard battalion to constitute effective blunt damage, and it needs at least about 1,200 to 1,500 joules of energy depending on the weight and shape of the projectile. This means that the average demand for initial kinetic energy is around two kilojoules. Even when firing heavy shotguns, the number of particles should be at least 30 to ensure that the gun does not have a wide range of air leaks that reduce efficiency. However, most of the light field guns of the Ming and Qing dynasties could not reach the initial kinetic energy of even about 60,000 joules. Or even if it reaches this level, it will be possible to have a medium-heavy artillery with a body of about 500 catties or 300 kilograms.

And this is not the most important thing, the most important thing is the lack of real combat awareness of the army as a whole in the new era of firearms. No one is serious about doing all kinds of experiments to verify what size of salted eggs is the most effective for different targets and opponents.

Therefore, most of the projectiles fired by the Safavid Persians were light shotguns weighing about six or seven cents, and there were some single-headed bullets that were obviously too heavy. This is true even for shotguns fired from guns of a small caliber. The reason seems to be very simple, such a projectile is the smallest projectile that can form an effective ricochet kill against low-protection targets on dry land, and it is also the specification of many handcuffs and firearms projectiles, which is the least difficult to confuse when making and actually using them.

In this way, although the rain-like projectiles also covered the two or three hundred officers and men on the loose front, the Russian casualties were less than 10 people, and there were often some minor injuries. Shotguns that are too small often don't deal truly lethal damage when they hit well-made visors.

Of course, in order to avoid unnecessary casualties, the officers and men of the new guard battalion could only be suppressed in the lying skirmish pits dug and opened up as quickly as possible.

In this way, about 20,000 follow-up troops were successively thrown into the counteroffensive of the army that had just arrived in Isfahan, and the Persian army that had been put into the counterattack also increased to about 70,000 troops, and the object of the position was only a defensive line of about 1,000 people in the encirclement on three sides, which stretched for four or five miles.

It was only about a mile away, and the cavalry team, which did not need to worry about horsepower at all, approached the effective firing range of cavalry and even cavalry firearms in a matter of moments, but it was also at this time. The firepower of the new guard battalion was launched, and in almost a short time, more than 1,000 ammunition that had been loaded long ago were fired, most of which were black powder armor-piercing shells, and some were arrow-shot shells that fired at medium and close ranges for self-defense.

Although about half of the team participating in the counterattack were cavalry and approached the front, under the fierce blow of more than 1,000 new ammunition, they quickly suffered the price of more than 10,000 casualties and even 10,000 horses. Before the mighty torrent reached its target, it was contained at some point, just as the rising tide of the sea suddenly hit a dam.

Of course, when the large army in front was contained, the momentum of the rear impact continued, and a relatively densely populated area was once again formed in the front, as was the case in many previous operations. It was at this moment that the battle sappers covered with the blasting attack they had prepared as fast as they could.

Compared to the previous battles against the Ottoman army in the winter, the ground around Isfahan near summer is much softer, and it is noticeably more adept at blasting with some metal triangular barrels as quickly as possible. This time, under the blow of 300,000 buckshot bullets totaling 30 tons like a waterfall again, more than 30,000 people were knocked down on the spot, plus the previous losses. More than half of the Persian army that had left the city was left behind.

Under such a blow, many of the army of the Safavid Dynasty held a meeting to retreat, but at this time, the seventy Baotou steel medium and heavy field guns attached to the south of the city also continued to attack with fierce firepower, almost every round of fire can spray tens of thousands of standard medium shotguns, and under the few rounds of blows that are not too long, some enemy troops near the city gate who are still planning to use the hook and the city gate to return to the city remain outside the city.

So far, the vast majority of the 70,000 troops who have left the city to fight have remained outside the city, and have been turned into corpses, or later turned into corpses to be slaughtered. The regular garrison of Isfahan was reduced from 220,000 to about 160,000. And all the armed forces in this case were reduced to about 260,000 people.

Although the army was still abundant to a large extent, the previous morale was greatly reduced in the face of this terrible blow, and many of the defenders at the head of the city retreated to the fortifications that had been prepared on the inner side of the city wall at this time in order to avoid the possible threat of the terrible firepower.

Having learned some lessons from the original battle against Istanbul, Xiao Xuan didn't want to waste too much firepower to launch a general attack and suppression in the city at this time. After all, some of the means that can be used in the case of coastal logistics are different at this time, and should be treated differently.

Therefore, it was the combat engineers who first carried over the 600 naval light explosive bombs weighing about 300 pounds that had been prepared, and prepared for the blasting attack at nightfall.