Lithuanian Grand-Duke Jagiełło’s brothers wanted heavier cannons to oppose the Teutonic Knights’ new weapons, but since gun carriages did not exist yet the heavy weapons could only be transported by water. Because the Teutonic Knights controlled the lower reaches of the Nemunas River, the only route from Poland to Lithuania was from the Vistula up the Bug River to the Narew, then up that river’s tributaries until close to streams that led down to the Nemunas at Gardinas. Cannon could be dragged over a short portage, or perhaps even transported the entire way over the many bodies of water in the Masurian Lake district. Not unexpectedly, the Teutonic Knights sought to block this route by building forts in the wilderness north of the Narew. This presented some complications, because that land belonged to the Masovian dukes, but it did hinder Jagiełło’s efforts to send assistance to his brothers. The wilderness had been unoccupied since the withdrawal of the Sudovians to the east, and empty of all humans other than raiding parties from Prussia, Lithuania, and Masovia. But technically it was still Masovian.
Meanwhile the war had become even more brutal than before. The Teutonic Knights decapitated any Poles captured in the Lithuanian forts – they accused them of apostasy and aiding pagans – and the crusader raids into Samogitia met so little resistance that they were little more than manhunts. In reprisal the Samogitians occasionally sacrificed prisoners to their gods, burning knights alive, tied to their mounts in full armour over a giant pyre, or shooting them full of arrows while bound to a sacred tree. Even so, the war was not continuous. Despite the desperate nature of the fighting, there were truces and sudden changes in alliances; and nothing disturbed the universal love of hunting, for which special truces were arranged.
Although Vytautas was a crusader ally, as he saw his ancestral lands being destroyed he began to look for an alternative means of returning to power in Vilnius. Intellectually, he understood that it was most logical to join forces with his cousin, but Vytautas was a passionate man, not always ruled by his mind. Besides, he had not forgotten Jagiełło’s past treacheries and, well-aware of assassination plots, he surrounded himself with Tatar bodyguards. Consequently Vytautas was an emotional pendulum, swinging from one side to the other, forced to seek help from someone, but not liking any of the available allies. The Teutonic Knights took a cynical but philosophical view of this, as one chronicler stated: ‘Pagans rarely do what is right, as the broken treaties of Vytautas and his relatives prove’.
Still, when he considered the situation rationally Vytautas saw his present alliance with the Teutonic Order as a losing strategy. Victory under such circumstances would make him an impoverished ruler, hated by his own people and dependent upon the goodwill of the grand master. He may have sent a message to Jagiełło, somehow evading the order’s efforts to watch over his every move; if so, it was undoubtedly vague, the kind which would do no harm if discovered. Or perhaps Jagiełło merely sensed that the time was ripe to make his cousin a proposal. All that is known for certain is that in early August 1392 Jagiełło sent Bishop Henryk of Płock to Prussia as his emissary. This rather unpriestly Piast prince-bishop was related by marriage to the king’s sister, Alexandra of Masovia. Henryk used the opportunity provided by confession to inform Vytautas of his master’s propositions. Vytautas, under the pretext of allowing his wife to make a visit home, told Anna to negotiate with Jagiełło; he also managed to secure the release of many hostages who had been kept in honourable captivity in scattered fortresses. Then he gave his sister in marriage to Bishop Henryk and dismissed the English crusaders who had just arrived to join another invasion of Lithuania. He thus eliminated from the game the most dangerous bowmen in Europe, warriors who had been so effective in recent battles with Jagiełło’s subjects.
Vytautas plotted his betrayal carefully, arranging for the Samogitian warriors stationed in the crusader castles entrusted to him to kill or capture the Germans in the garrisons. After this had succeeded, he sent Lithuanian armies on widely separated fronts into Prussia and Livonia and overwhelmed what forces the Teutonic Knights still had in Samogitia. Vytautas’ return to Lithuania was greeted with wild enthusiasm. Every Samogitian appreciated his courage and cunning, contrasted his genial personality with Jagiełło’s vengeful brothers, and understood that the series of military disasters was likely now at an end; and the highlanders were happy to see the reign of foreigners – Poles – at an end.
It was a year before Grand Master Wallenrode was able to take his revenge. In January of 1393 he struck at Gardinas, employing Dutch and French knights. This threatened to cut the major communication route between Masovia and Vilnius, effectively isolating Lithuania. Vytautas and Jagiełło appealed to the papal legate to arrange for peace talks, which did in fact take place in Thorn in the summer. After ten days, however, Wallenrode became ill and left the conference. A short while later he died.
The new grand master, Conrad von Jungingen, was a decisive leader of far-reaching plans and far-reaching vision. Regional peace could be achieved, he believed, by a decisive victory in Vilnius, the one location that Vytautas and Jagiełło had to defend with all their might.
Already collecting in Prussia in the waning days of 1393 was a great army of French and German crusaders, among whom was a body of Burgundian archers (perhaps English mercenaries) whose concentrated firepower had the potential to savage the pagans quite as badly as they had mauled French armies in recent years. The crusaders began their march up the Nemunas in January 1394, relying on the thick ice to serve as a highway into the Lithuanian heartland. Vytautas attempted to halt the crusader march early on, but he barely escaped death under the first barrage of his enemies’ missile weapons, and his army was badly routed. The Lithuanian stand turned into a hurried retreat before the 400 advancing crusader knights and their thousands of sergeants and infantry.
Vytautas received a reinforcement from Poland, a strong contingent of knights, to join the 15,000 mounted warriors under his command, but their numbers were insufficient to stop the advance of the now much-feared archers into the heart of his country. The crusaders passed through forests, swamps, and open fields, evading ambushes, to reach Vilnius, where Vytautas was joined by his Rus’ian troops. The grand prince fought a desperate engagement, giving and taking heavy losses until his Rus’ian wing fled and was followed by one Lithuanian unit after the other. At last, he, too, had to retreat, and again he barely escaped the field alive. While Vytautas sought to rally his scattered and demoralised forces at a safe distance, the Teutonic Knights settled down to besiege his capital, a place they knew well from 1390. They made new plans to celebrate the conversion of the Lithuanians, this time assured by their arms that the baptismal ceremony would take place properly – a true conversion, not the ambiguous promises of Jagiełło and Vytautas, whose Christian names were used only in formal documents. What further proof, the crusaders asked, did anyone need that their allegiance to Rome was very thin?
On the eighth day of the siege the Livonian master arrived to reinforce the crusader host. He was welcomed heartily, for now the crusaders could surround the entire city, contain the sorties from the fortress, and make a determined assault on the wall at its weakest point. The Livonian forces were sent to the river front, where they built two bridges, then rode across the river to plunder the countryside. In this foraging they lost fifty men (only three of them German and only one a knight, indicating that a large native contingent was present) while killing and capturing ‘innumerable’ Lithuanians. Nevertheless, the siege did not go well. After another week of fighting, the firing posts that the engineers had built for the archers, the siege towers, and the bridges were destroyed by an inferno that the garrison set during a sortie. Nevertheless, the crusaders had some successes – their artillery had brought down a stone tower and set fire to various wooden fortifications. Soon afterward, however, the Lithuanians set a tower in the crusader camp ablaze, which not only caused extensive casualties among the French but destroyed most of the supplies, so that the crusaders would be unable to remain at Vilnius as long as planned. The grand master allowed the war of engineers to continue four more days, but it was obvious that the Lithuanians could destroy new siege works almost as fast as the crusaders could build them. An assault would require more time to prepare than the army could be kept fed by its remaining supplies. Also, Vytautas had been regrouping his scattered forces. Scouts were reporting that he would soon be coming to relieve the city. This meant that the crusaders would have to fight on two fronts – an unattractive prospect.
The leaders of the crusader armies met, discussed their situation, and reluctantly agreed to abandon the siege. The grand master sent the Livonian forces home first, then moved west himself, harassed by Lithuanians cutting down trees across the road, fortifying the river crossings, and laying ambushes in the woods. The Prussian force alternately negotiated and fought its way along the route away from Vilnius, then abruptly changed direction and marched through Samogitia, thereby avoiding Vytautas’ army and the obstacles he had erected.
The expedition had been one of the most memorable enterprises of the medieval era – the siege of an enemy capital with knights and military specialists drawn from all of Europe – and a chivalric exploit worthy of any land; but the capture of the greatest city in Lithuania was beyond the ability of the crusaders. The war continued, with the Teutonic Order striking up the Nemunas River and ravaging the Samogitian settlements; they were far from attempting another invasion of the highlands, farther yet from Jagiełło’s capital. The Lithuanians remained on the defensive, biding their time. They had no reason to risk everything on a pitched battle, no reason to carry the war back into Prussia. Not yet, at least.
By the end of 1393 Vytautas was master of Lithuania. He had driven all Jagiełło’s brothers from the land, and when his forces won a major battle in 1394, crushing the Volhynian, Galician, and Moldavian dukes, Jagiełło completely abandoned his brothers to their fate: Kaributas went into exile in Cracow; the Moldavian ruler also fled to Cracow, where he was imprisoned; Skirgaila died in Kiev in 1396, probably poisoned; and Svidrigailo fought for the Teutonic Order briefly before achieving a reconciliation. The former bishop, Henryk, died, unmourned, of poison.
Jagiełło retained the title of supreme prince, and Vytautas was satisfied with the lesser title of great prince until his very last days. But as time passed, so real authority passed into the hands of Vytautas.
Meanwhile the crusader raids into Lithuania continued. Not only were the Prussian forces constantly in Samogitia, but so too was the black and white banner of the Livonian master – a black centre stripe horizontally flanked by white, with contrasting triangular tails fluttering behind. The last raid into Samogitia came in the winter of 1398, when the crusaders took 700 prisoners and 650 horses, and killed many people; they had surprised the defenders by entering the country during changeable weather, a gamble that had rarely proven worth the risk before, but paid high returns when successful. Vytautas did not retaliate. He was campaigning in southern Rus’, longing for an end to the troublesome northern war that was hindering his chances for success on the steppe. Only his promise to Jagiełło stood in the way of making peace. Of course, promises were not serious obstacles to Vytautas.
Vytautas had an excuse to refuse obedience to Polish orders soon afterward, when Jadwiga (who – not Jagiełło – was legally rex of Poland) demanded a tax from the Lithuanians, a tax that Vytautas’ boyars had no desire to pay. The royal demand was not unreasonable. Vytautas had depended on Polish aid to defend Samogitia, and Polish nobles and clergy were asking why they had to bear all the costs, while the Lithuanians paid nothing. The Poles probably reasoned that Vytautas had no choice, and that no matter how much he protested, in the end he would make his subjects pay.
This presumed reasoning underestimated Vytautas. The grand prince was not fixated on Samogitia. Instead, he was studying the situation on the steppe. In the process of driving Jagiełło’s brothers from their lands in southern Rus’, Vytautas had confirmed suspicions that the Tatar hold on the region had weakened. Moreover, his popularity among his people would be seriously undermined if he appeared to be a mere Polish puppet.
Vytautas understood that if he did not pay the tax he would have to sue for peace with at least one enemy. Better the Teutonic Order than the Tatars, he reasoned, for it was against the weakened Tatars that he saw the best prospects of territorial expansion. In contrast to the potential conquest of the steppe, he could at best fight a defensive war against the Teutonic Knights. Peace with the grand master, of course, could be had only at a price – Samogitia. Fortunately for Vytautas, Jagiełło was caught up in the dream of driving the Tatars from the steppe too, removing them forever as a threat to his Polish and Lithuanian frontiers; and his Polish subjects, who had lived for generations in fear of the Tatars, agreed. It helped that Jadwiga knew the grand master personally and liked him; she had always wanted peace with Prussia and had encouraged the many inconclusive meetings with the grand master’s representatives in the past. Now it appeared that there was the likelihood of a breakthrough in the negotiation process.
Peace talks with the Teutonic Order culminated in September 1398 in the Treaty of Sallinwerder, which surrendered Samogitia to the Germans. Vytautas and Jagiełło led their armies to Kaunas, where the last pagans of Samogitia surrendered to the Teutonic Order. The Samogitians growled, but they understood that they could not fight without the grand prince of Lithuania and the prince-consort of Poland. Besides, they had been under crusader control before, and it had not lasted.
The next year, in the summer of 1399, a great army of Lithuanians, Rus’ians, Tatars, Poles, and Teutonic Knights rode out onto the steppe to challenge Timur’s domination there. The result was another military disaster. Had Vytautas been successful, the history of the Teutonic Order would have taken a new and more exotic turn than anyone had previously imagined. But even defeat on the steppe did not mean a return to the old ways. In the years to come some Teutonic Knights would accompany Vytautas against Rus’ian foes as far away as Moscow, and others would board ships to destroy a pirate stronghold on the island of Gotland.
It appeared that the crusade was at an end. The Teutonic Order had achieved its goal, the Christianisation of most pagans and the conquest of the rest. The Teutonic Knights still welcomed a handful of crusaders to assist in garrisoning their castles in Samogitia, but the crusade was essentially over by 1400
Interestingly, the greatest complaints against the Teutonic Order came from those churchmen who were unhappy that the grand master was not forcing his new subjects to undergo baptism immediately. Conrad von Jungingen was instead pursuing a policy of economic development, and creating from the many petty Lithuanian boyars a smaller, dependable ruling class. He assumed, probably correctly, that in the course of time, this would result in the voluntary conversion of these stubborn woodsmen.
Vytautas believed that too. He secretly encouraged the Samogitians to hold out. He would soon be coming to free them again.