Casthya, Rustam, who received the king's orders, had to order his army to cross the river and seek a decisive battle with the Arabs, the Persian army line was 4,000 meters long, and in the center of the battle line also had Persian characteristics, about 300 war elephants.

These are large, adult war elephants with a wooden square device about half a man tall on their backs, and usually three or four archers stand inside. There is also a rider at the elephant's neck, who controls the elephant and wields a spear.

Persia does not produce war elephants, and most of their war elephants come from Pakistan, India and other places in later generations, so the number is relatively scarce. Unlike Linyi, the real wax and other countries themselves are the birthplace of Asian elephants, and they are also primeval jungles, which can accumulate such a large army of war elephants.

However, the war elephants in Linyi may not be able to recover in the next few decades, and a thousand war elephants are not so easy to accumulate, because Linyi has pulled many young and old war elephants onto the battlefield.

At the beginning of the war, the Arabs would recite the revelation of the Prophet Muhammad in unison, and then their commanders would give the customary signal to attack Allah the greatest, and the army should call out three times, the second and third times the army should have their weapons and horses ready, and the fourth time the soldiers would charge en masse.

However, when the Arabs shouted, the Persians did not give them a chance, but carried out the charge directly when they uttered the first cry.

In the first batch, Ostam sent his own army of war elephants, and the war between the two sides was not much different from history, and the morale of the Arabs was very high, which was not comparable to the Persians at this time.

In fact, the Persians of this period had a messenger to convey information at intervals on the way to Ctesiphon, which allowed Isai III to quickly grasp the situation on the front line, and after hearing Pei Xingjian's words, Isai III finally made a different choice from history.

Because he could grasp the battlefield information at any time, he knew that Ostam was not far from launching an attack, which is why he sent the cavalry troops directly after forming them.

In fact, by the time the cavalry units set out, the war on the front had already begun, and in order to maintain combat effectiveness, the subsequent cavalry units did not rush with all their might, but after the night of the first day, the time for night rest was shortened, and they began to set off early the next morning.

And on the front line, the war between Persia and Arabia is almost exactly the same as history, because of the strong morale of the Arabs, the first day of the war gave the Arabs an absolute advantage, on this day the Arabs lost nearly 3,000 people, while the Persians almost 10,000!

The next day's war still followed the trajectory of history, and the Arab reinforcements led by Kaka were like divine soldiers descending from the sky, raiding from the flank, and they themselves rushed directly into the Persian positions and cut down the Persian front-line general Bahman to the ground.

The death of the commander of the front line has brought the morale of the Persian army to the bottom, and if the trajectory of history continues, the two sides will continue to fight for the whole day until nightfall, and today the casualty ratio of the two sides is even more than 1:3, 1 for Arabs and 3 for Persians.

But unlike history, this afternoon, the Persian front-line general Ostam who was desperately rescued by his men received a report from a messenger that the king had sent another 6,000 mounted cavalry! And it will be there about this evening!

Ostam couldn't help but wonder where the king had gotten another 6,000 mounted cavalry! But he understood one thing, the turning point of this war had come!

At that moment, he immediately ordered the heralds to give the order to this mounted cavalry, ordering them not to rush to the battlefield today, but to rest on the spot, and then cross the river in the evening around the lower reaches of the river, and wait for the battle between the two sides tomorrow, and then this mounted cavalry will be killed from the flank after the two sides have fought tomorrow!

There is a misunderstanding here, Li Ke only determined after reading many sources, according to some loose information, there were 15,000 heavy cavalry in Persia in this battle, but in fact, there is a problem here, to be precise, it is not a problem with numbers, but a problem with translation.

In the early translation of European history, the domestic melee cavalry, that is, the melee cavalry in Europe that undertook the task of charging into battle, was translated into heavy cavalry.

But in fact, the domestic heavy cavalry refers to the armored cavalry, so history is not like this. As we all know, cavalry did not have a single fixed purpose, for example, the real mounted cavalry of Byzantium even took on the role of archers when they were not assaulting the battlefield.

And Persia is not in a position to take out 15,000 heavy cavalry with horse armor, if Persia really has this number of armored cavalry, it is impossible for Arabia to carry it, because the Arabs of this period only have a small amount of armor from the defeated Persian army and snatched from the Persian army.

The hoplites were unimaginable to the Arabs of this period, not to mention that when they fought against Persia, they actually provoked Byzantium.

If there really are 15,000 heavy cavalry, how can the current 30,000 or so Arab soldiers be able to withstand it?

In fact, most of the 15,000 Persian cavalry on the front line were cavalry with only leather armor, that is, melee cavalry. The mounted cavalry of Sassanid Persia was composed of the lords of the manor, that is, the nobles, and these were the real hoplites, and the number of these cavalry was only five thousand.

And the horse armor of these 5,000 heavily armed cavalry is not all iron armor, but most of it is leather armor, but the armor of the riders is iron armor.

Ostam may not be a top commander, but he is a qualified commander, and after two days of bloody battles, especially the next day, reinforcements led by the Arab Kaka suddenly appeared on the battlefield, not only killing their flank generals, but also almost breaking the Persian formation.

However, in this case, Ostam did not send direct support from the heavy cavalry, but kept the Persian army alive until the arrival of the evening.

Without these 6,000 soldiers, the real history would have been a draw again on the third day, but the consequence of the draw on the third day was that the Persian army was forced to the river, and then the Persian morale was completely gone, and then on this day Ostam accidentally fell overboard from a war elephant, which led to a direct rout of the Persian army.

And now Ostam has the confidence of victory, because although the Arabs have always had the upper hand and they have suffered fewer casualties than the Persians, let's not forget that the Arabs have only half as many soldiers as the Persians!

As long as tomorrow when the mounted cavalry appears, the morale of the Persian army will surely be victorious!