How the Mongols were finally DEFEATED by its own tactics? Mongol invasion of Rus 1223-1380

In the 13th century, the Mongol Empire, one of the most powerful military forces the world had ever seen, expanded its territory into the area of modern day Russia. At that time, the Rus had never encountered an army quite like the Mongols. Their cultures, strategies, and methods of warfare were worlds apart. While the Rus relied heavily on traditional feudal style forces and heavily armored cavalry, the Mongols excelled in speed, mobility, and the deadly precision of their horse archers. The Battle of Khalkha River in 1223 marked a significant moment that showcased these stark differences. Through masterful tactics, including feigned retreats and swift counterattacks, the Mongol army secured a decisive victory over the coalition of Rus forces. This crushing defeat not only weakened the Rus, but also plunged them into the Tatar-Mongol yoke. However, what the Mongols could never have anticipated was that their own strategies, which had once subjugated the Rus, would eventually lead to their downfall. Nearly two centuries later, at the Battle of Kulikovo in 1380, the Russian army, having learned from years of Mongol domination, adopted and adapted the very tactics that had once defeated them. Using these strategies, they secured a monumental victory over the Golden Horde, marking the beginning of their liberation from Mongol rule. It's almost unbelievable, isn't it? What actually happened with them? Firstly, we go straight to the Battle of Khalkha River in 1223. The Rus' forces were estimated to be between 40,000 and 80,000 strong, which was double the size of the Mongol army. But most of these troops were inexperienced farmers, armed with makeshift weapons crafted from farming tools. On the flip side, the Mongol army was a professional force with sophisticated tactics, particularly their clever ability to feign retreat, to lure enemies into traps. They headed to a rendezvous point about 50 miles southeast of Kiev, where they planned to gather their forces. From there, they marched along the Dnieper River, eventually joining up with the Cuman army advancing from the south. As the Rus' troops moved into battle territory, the Mongols sent a delegation of ten envoys to propose negotiations. Little did the Rus' princes know, killing those Mongol envoys was a serious breach of diplomatic protocol, and they would soon pay an expensive price for it. In retaliation, Subutai and Jebe launched an immediate attack. Not a direct one, but through quick, small raids, retreating back east, making it seem like they were scared and running from the might of the Rus'. The Rus' troops and their Cuman's allies, giddy at the thought of victory, were eager to chase down the Mongols. They believed their foes couldn't be any more dangerous than the Cumans. However, some leaders, like Mstislav Romanovich of Kiev, urged caution, warning that pursuing an enemy they didn't fully understand across those vast, unfamiliar plains could spell disaster. Yet, the majority favored the chase, skipping out on sending a scouting unit ahead, convinced they had caught up with the Mongols. From early May 1223, under the leadership of Subutai and Jebe, the Mongols kept retreating, aiming to wear down the Allied army, cut them off from supply lines, and lure them away from familiar territory. But day after day, the Rus' couldn't catch the Mongols, only finding traces of their presence fading away. This started to create chaos within the Rus' ranks, with groups moving at different speeds. In their pursuit, the Rus' commanders also made a critical mistake by failing to prepare a retreat plan or organize a regroup. After nearly two weeks, the Rus' vanguard finally caught up with the Mongols at the Kalka River by the end of May 1223. With pride on the line and encouragement from their commanders, the Rus' troops charged into battle without taking a breather, confident they could win swiftly. The Rus' soldiers braced themselves, shoulder to shoulder, with no clue how the Mongols would strike next, but determined not to break formation. They were a bit on edge, worried that the Mongols might make a run for it, robbing them of a hard-earned stash of horses and loot they'd picked up across Persia, Georgia, and Azerbaijan. The pressure was on. Each of the commanders was itching to be the first to jump into the fray, each one dead set on snagging the glory, and the spoils, for themselves. Most of these guys were farm folk through and through. In the right season, these were some tough, hard-working peasants, solid muscle, and used to working long hours. But they weren't exactly what you'd call a professional army, especially coming off a rough winter without much to eat. They were more familiar with swinging a scythe in the fields or urging on an ox than they were with actual weapons. Still, hearing their commanders promise an easy victory, these farmers shrugged and lined up behind their shields, makeshift weapons at the ready. They carried whatever they could cobble together, a sword here, a spear there, a clunky club or two. You could tell they'd seen more farming than fighting. Right beside them was a line of more experienced archers, and behind everyone the proud generals sat tall on horseback, watching over their men. But then, nothing happened. No battle cry, no charge. The Cumans, who were practically chomping at the bit to chase down what looked like retreating Mongols, were the first to rush across the Kalka River. Right on their heels was Mstislav of Galicia and his crew, followed by Mstislav Sviatoslavich of Chernigov and his forces. Their army advanced in four groups, with the Cumans leading as the vanguard and flank guard, followed by the main Rus forces. Meanwhile, Mstislav Romanovich of Kiev was holding back on the other side of the river, a bit more cautious and not too thrilled about charging forward until he had a better idea of what lay ahead. Once they got across the river, the Cumans went after the Mongol outposts, pushing them back in all directions. They were feeling pretty confident, maybe a little too confident. After all, these guys were skilled archers, right at home on the steps, and were convinced they could chase down the Mongols just like in their previous easy wins. So, with hardly a second thought, the Cumans charged forward, with the Volhynians from the 1st Division tagging right along, thrilled by this little taste of victory. If you know anything about the Cumans, you know they can be a tad impulsive. Fired up from this minor triumph, they rushed headlong into the pursuit, crossing the river with their allies from Kiev and Chernigov, trying to catch up. But by the time the rest of the Rus-Cuman force started crossing, half their army was already over on the far side. The Mongols, meanwhile, weren't running scared. They were heading back to their main force, who were now forming up in the distance. Here's where it gets interesting. Subutai and Jeibi, the Mongol generals, had this ambush all mapped out. They'd tucked parts of their army away in the forests just beyond the river, with another group stationed downstream waiting to spring the trap. Oh, and if things got messy, they had reserves lined up, ready to jump in. Subutai just sat back, watching the gaps in the Rus-Cuman army grow wider, knowing the perfect moment to strike was close. The day itself was perfectly sunny spring weather, so the Mongols decided to go for a silent strike approach, using only flag signals to direct their forces. When about half the allied forces had crossed, Subutai gave the signal. Like a silent storm, Mongol archers closed in on the Rus ranks. The only sound was the faint, haunting echo of hooves on soft ground, enough to send a Subutai split his army into eleven divisions, each about two thousand strong. He held five divisions in the center, flanked by three divisions on either wing. Instead of their usual hit-and-run style, the Mongols came at the Cumans from all sides with heavy cavalry. Jeibi led a charge from the north, while the left wing attacked from the south. Unlike their typical skirmishing, this was a full-on assault. The Mongol horse archers and cavalry, who'd been lying in wait all stealthily in the forest and along the river, suddenly poured out, trapping the Cumans and the Rus' front forces in a nice, tight circle. Then, with classic Mongol precision, they pivoted right over to the advancing Khivan troops. And, did it get intense? The Mongols hit them with a fierce counterattack, catching the Rus totally off guard and turning the whole scene into a bloody mess. They stopped their horses just out of reach of the Rus' weapons, and from there, they rained arrows down on them. All the Rus could do was watch as their friends dropped like flies, soaked in blood, with no one close enough to fight back. No sword, no spear, no mace, nothing. Just a hailstorm of arrows, each one designed to fit only into a Mongol bow. These arrows were hardened in brine after being heated red hot, and Mongols could launch them over two hundred meters. They could hit a target from a hundred and fifty or even a hundred and seventy-five meters away. They say a trained Mongol archer could fire six arrows in ten seconds. That's some serious rapid fire. Their bows were made from wood, horn, and sinew, specially crafted to handle both compression and tension. These things packed serious punch, all while being small enough for a rider to use with ease. The steppe folks had been perfecting these bows for thousands of years, so you know they meant business. Mongol archers typically carried two or three of them. One for horseback, one for when they dismounted, and a ton of arrows strapped to themselves and their horses. The Rus horse archers were so mad they just snapped the Mongol arrows to keep them from being reused. Like, well, at least you can't shoot us with our own arrows. But then the Rus archers started shooting back, only to realize their European bows couldn't reach as far. The Mongols? Oh, they had a little fun with that. They'd chase after the Rus arrows, not to break them, but to shoot them right back. Their own bows were so versatile, they could easily use the enemy's arrows against them. Romanovich and the other princes were battered in the chaos, as the Mongols pressed in, their archery and lancers making a deadly combo. Taken by surprise, the allies suffered massive casualties. With their commanders down, wounded, or killed, they had the river at their backs, and no way out. The trap had snapped shut, front lines couldn't budge, and in the crush to escape, some were trampled under their own men as the Mongols kept up the attack. For the Cumans, there was no way out now. In a desperate attempt to flee, they ran straight into the Galician second line, causing even more confusion. Soon the entire coalition force fell apart, and any sense of order just evaporated. By the time it was over, thousands had been killed. Rus princes on their warhorses, armor shining, with bright banners and crests. These European-bred horses were made to show off strength, not speed or agility, though. On a parade ground, sure, they looked impressive. But in the heat of battle, the Rus' had nowhere to go. When the infantry fell back, all they could do was try to escape, but these horses weren't cut out for long chases under heavy armor. Soon enough, these armored warriors were picked off by the Mongols, and one by one, the Rus' lords fell. Some accounts say Prince Mstislav Romanovich of Kiev tried to join the forward units and put up a fight, but the truth is, he held back. Watching the battle collapse, he ordered his men into a defensive circle, setting up a line of wagons in a last-ditch effort to hold off the Mongols. Meanwhile, Mstislav of Galicia, seeing the other forces in full retreat, decided to abandon the battlefield altogether, leaving the rest of the army to fend for themselves. With three divisions crushed, Subutai and Jebe focused on the remaining forces. The Kievan forces, led by Mstislav Mstislavich of Galicia, tried to hold their ground, setting up behind a makeshift wagon fort and hoping to make a break west toward the Dnieper, but it was a dire situation. The Mongols rained arrows on the camp, arrows whistling through the air, cutting down anyone who tried to resist. Days blurred into each other as the Mongols tightened their grip with a brutal precision the Kievans had never faced before. Three days in, morale was crumbling, and with nowhere left to go, Prince Mstislav agreed to negotiate a surrender. The Mongols promised no blood would be shed if they laid down their arms, and with no other options left, Mstislav took the deal. The Kievans thought they'd struck a deal with the Mongols and stepped out of their fortifications, only to be met with a nasty betrayal. The Mongols turned on them in a heartbeat, cutting down most of the surrendered soldiers and capturing the rest. Meanwhile, other Mongol troops chased the fleeing Cumans and Rus, many of whom met a tragic end in the Dnieper River, trying to swim for safety. The Mongols pursued the Rus forces all the way to the Black Sea, right back where the campaign had begun. At the campaign's end, Subutai and Jebi took their men down to Crimea to enjoy a Black Sea spring. They celebrated for days, and then came one of the most chilling displays of Mongol cruelty. They invited Mstislav, a defeated Kievan prince, and his son's-in-law to be their guests of honor. They rolled them in leather rugs, laid heavy wooden boards over them and left them beneath the floor of their tent, slowly suffocating them as the Mongols sang and feasted above. This message was crystal clear. They wanted everyone to understand the price of harming a Mongol envoy. And for their soldiers, a warning. Revenge for one Mongol life lost would be merciless. After that, the Rus learned the lesson from their enemy and turned the table in the Battle of Kulikovo that we could take a look now. Finally, he chose to fight rather than defend. Late on the night of September 7th, under a thick morning fog, the Russian army crossed the Don River. By the early hours of the next day, as the fog began to lift, the troops started to form their battle lines. Dmitry Donskoy's army was strategically arranged into three lines, each serving a crucial purpose. Imagine standing alongside his forces. At the front, scouts acted as the eyes of the army, tasked with spotting the Mongol approach and engaging in minor skirmishes to slow them down. Behind them was the main infantry regiment, equipped with a tsolitsy, short spears ideal for throwing, and sturdy shields made from wood and metal. Their armor included the bazooband for arm protection and greaves for the shins, preparing them for Mongol assaults. At the center stood Dmitry's elite guard, a mix of heavy cavalry and infantry. These heavily armored cavalrymen wore chain mail and wielded sabers and maces, ideal for close combat. Dmitry also deployed smaller flanking detachments to prevent Mongol surprises. A secret weapon lay hidden in an oak grove, an elite cavalry unit led by Prince Vladimir of Serpukhov. This unit was poised to launch a surprise attack when the Mongols became overextended, turning the tide of battle in Dmitry's favor. Right behind the front lines was the core of Dmitry Donskoy's army, his personal guard, which included both infantry and heavy cavalry. Before Mongol rule, horses were a luxury in Russia. However, the Mongols' battlefield dominance led Russians to realize they needed their own cavalry. By the 13th to 15th centuries, professional cavalry units emerged from the elite warrior class. These soldiers, drawn from wealthy noble families, were equipped with the necessary horses and gear, marking a significant evolution in Russian military tactics and preparing them for the challenges of Mongol warfare. That morning, the Mongol army was still fatigued from their long march and not particularly skilled in scouting. It quickly became evident to them that the Russians were preparing for battle. Under Mamai's command, they moved to confront the enemy. The Mongol force far outnumbered the combined armies of the Russian princes, comprising a regular army, unlike the Russians, who still operated at a guard level. Mamai organized his troops into three lines. The first line consisted of light Mongol Tatar cavalry, agile and quick, intended for harassment and skirmishes. The second line delivered the heavy firepower, featuring cavalry and Genoese infantry armed with crossbows. The third line was a mix of Mongol cavalry and infantry, with auxiliary regiments positioned to guard the flanks. Mamai observed from a hilltop, strategically placed for command and protection. His warriors were battle-ready from a young age, mastering archery, horse-riding, and various weapons, with speed being their hallmark. They used composite bows, allowing them to shoot accurately while galloping, with each archer carrying multiple bows and arrows tailored for different situations. The Mongols' remarkable agility and tactical organization made them a formidable force on the battlefield. Dmitri's army was estimated to be around 30,000 men, but the Mongol force was much larger, likely numbering between 40,000 to 50,000 warriors. That's a big difference, and it gave the Mongols a clear advantage in terms of sheer numbers. The battle kicked off when Mamai's advanced troops charged straight into the first line of Russian sentries, with support from crossbow fire coming from the Genoese mercenaries behind them. It was quick, fierce, and brutal. The Mongols had the numbers, though, and eventually, Dmitri's first line had to fall back. But they did so slowly and in good order, retreating to regroup with the advanced regiment stationed right behind them. Seeing this unfold, Mamai sent his second wave forward, which included the Genoese heavy infantry in the center. That's when the real brutal, hand-to-hand combat began. Thousands of soldiers were clashing, swinging all kinds of weapons, trying desperately to avoid getting hit from every direction. It was chaos. As the fight raged on, the Russian left flank, which was weaker, started to bend and give way little by little. Mamai noticed this right away and seized the moment, ordering his Mongol light cavalry to charge and hit the eastern side of the Russian line. In response, the Russian commander on the left flank pushed forward a bit, trying to threaten the Mongol cavalry without fully committing, knowing that if he stretched too far, the whole left side could expose too much. But despite the Russian's best efforts, the pressure from both the Mongol infantry and that cavalry charge was just too much. The second Russian line couldn't hold on and had to retreat, this time merging with the main regiment where Dmitri himself was holding position. At this point, Mamai probably thought this was the moment the battle would be decided. Spotting Dmitri's personal banner on the field, Mamai sent in his heavy cavalry, aiming straight for Dmitri's position. His plan was clear, take out the leader, and the battle would be over. What followed was an enormous, brutal brawl, with both sides fully locked in ferocious medieval combat, each trying to get the upper hand. It was a life or death struggle across the battlefield. The battle was so fierce that it transformed the ground into a bloody swamp, with countless men from both sides falling in the chaos. Even amidst the turmoil, the Mongol commander kept a strong reserve force ready for this crucial moment. Believing the entire Russian line was engaged, he ordered his last reserve to charge the exposed left flank of the Russians. The Mongol cavalry thundered across the battlefield, crashing into the vulnerable side of Dmitri's army. At this point, his troops were already weary, and this brutal flanking attack pushed them to their breaking point. Just when it looked like the battle was about to turn into a Mongol triumph, a cavalry trumpet sounded from the eastern edge of the field. Out of the woods came the ambush regiment led by Prince Vladimir, charging in at the perfect moment. Their timing was impeccable, catching the Mongols completely by surprise. The fresh, elite cavalrymen slammed into the unprotected flanks of the Mongol forces, igniting panic among their ranks. The Russians, filled with newfound courage, pursued the retreating horde for nearly 50 kilometers, while Mamai barely escaped with his life. Casualties were heavy on both sides, though exact numbers remain a mystery. Dmitri's army likely lost about a third of their strength, while the Mongol forces faced a devastating defeat. But even as Dmitri celebrated this hard-won victory, trouble loomed on the horizon. Another formidable Mongol warlord was already preparing to strike. After hearing about Mamai's defeat, Prince Jogaila returned to Lithuania, while the Ryazan people aggressively attacked the retreating detachments, plundering them and taking prisoners. Prince Dmitri of Moscow prepared for a counterattack, but a significant shift occurred when Prince Oleg of Ryazan fled, causing the Ryazan boyars to welcome Moscow's governors. Upon his return, Oleg had to recognize Dmitri's authority, referring to him as his older brother and signing a peace treaty. Meanwhile, Mukhamad Bolak, Mamai's puppet Khan, was killed in battle. Mamai fled to the Genoese stronghold of Khafa in Crimea, hoping to regroup. However, his support dwindled without a legitimate Khan, leading many of his nobles to defect to his rival, Tokhtamysh. Eventually, Mamai was killed in Khafa, marking the collapse of his horde. Tokhtamysh emerged as the dominant power, ending the 20-year split within the Golden Horde. Now, let's talk about Prince Dmitri, who became known as Donskoy of the Don after the battle, did not manage to become fully independent from the Golden Horde. However, the victory at Kulikovo marked the beginning of the decline of Mongol power. In the century that followed, Moscow's influence grew, consolidating control over other Russian principalities. This gradual shift culminated in 1480, when Russia finally broke free.