Between the years 772 and 804, the Frankish King Charles (most notably known as Charlemagne) waged war against his northeastern neighbors. Centuries before, the Saxons and Franks had been tribes migrating and fighting together for or against Rome. Now their paths had diverged. The Saxons were pagans with tribal leaders, while the Franks were Christians with a charismatic, strong king. By the late 8th century, the inevitable had come, and war ensued. This conflict would result in the eventual absorption of most of Saxony into Francia, the decline of paganism, and the migration of Saxons across the kingdom.The Path to Charlemagnes Wars Against the SaxonsPainting of Emperor Charlemagne by Albrecht Drer, 1860s-1870s. Source: Wikimedia CommonsYou love the lilies of peace and the roses of war; thus you are resplendent in white and red.To fully understand the wars between Charlemagne and the Saxons, it is necessary to revisit the time of his grandfather. This war, which lasted approximately 30 years and took most of Charlemagnes time and energy, was not a religious war. Though religion, like all things at that time, played a large part in the story. It was primarily a territorial war. Charles Martel (Martel means the hammer) first engaged the Saxons in 718 AD because three years previously they had attacked Austrasia (the province Charles was lord over). Until that time, the Saxons and the House of Charles, known as the Carolingians, had been at peace. Charles was, in fact, in prison during their raid and waited until his position had improved to attack.Charles Martel at Tours by Charles Steuben, 1894. Source: Wikimedia CommonsIt is harder to understand the Saxons aggression when factoring in Charless father, Pepin II. During his entire time as Mayor of the Palace (the person who ruled for the king), Saxony and Francia had been at peace. Now that the situation had changed, and the Saxons thought that Charles was weaker than his father, they most likely thought they could take advantage of the situation.While Charles was sick in 723, the Saxons once again took the initiative and invaded Francia. The following year, Charles led a large force to punish them. Little is known from the sources of the time, but it is clear that the peace that Charles formed did not last long after his death.Frankish Kingdoms (Francia) 481-814 AD by William Robert Shepherd, 1911. Source: Wikimedia CommonsAfter Charles died in 741, the war continued sporadically through Pepin IIIs (also known as The Short) reign until 758, after which he secured peace with the Saxons. After many campaigns in Saxony, Pepin made the Saxons surrender, promising a tribute of three hundred horses annually. After 758, the troublesome Saxons would not become a problem until 772, when Charlemagne began his conquest of the provinces of Saxony.Charlemagnes War BeginsCharlemagne destroys the Irmen Column by Franz Kollar, 1872. Source: Wikimedia CommonsThe border between Francia and Saxony runs primarily along a plain with small sections of mountains and forests. This border created tension between the villages closest to the border. Einhard (the close friend and biographer of Charlemagne) wrote that raids were common in both directions. Neither he nor the Royal Frankish Annals (a semi-official yearly chronicle from the 740s to the 810s) mention who fired the first shot, but what we do know is that Charlemagne was ready to channel his namesake and bring the hammer.He started in 772 by invading Saxony, taking Castle Eresburg, and burning the Irminsul (an important religious structure in Saxony). He was so confident that this would deter any future attacks that in 773-774, he led a campaign against the Lombards, besieging their capital, Pavia, and installing himself as their king. However, in 773, a Saxon army invaded Francia and attacked the castle of Buraburg, burning homes and striking fear into the hearts of the locals. Einhard would later add, never was there a war more prolonged nor crueller than this, nor one that required greater efforts on the part of the Frankish people.Zerstrung der Irminsule durch Karl den Groen by Heinrich Leutemann, 1882. Source: Wikimedia CommonsAs a prelude to his invasion, Charlemagne sent four detachments into Saxony in 774. Three found battle while one only returned with treasure. The following year, Charlemagne assembled in Duren and launched his invasion of Saxony. He captured Castle Syburg and restored Castle Eresburg, which the rebels had attacked during the last Saxon incursion. Charlemagne continued his invasion until he reached the bank of the Weser near Braunsberg, where he encountered a Saxon force. A battle ensued, and the Franks, most likely due to superior numbers and weapons, defeated the Saxons.After the battle, Charlemagne divided his army and marched his men toward the River Oker. There, Hassi, an Austreleudi or Eastphalian Saxon lord, gave hostages and swore oaths of fealty to Charlemagne. More Angrian Saxons, under Bruno, also gave hostages. After taking these hostages, Charlemagne went back to the other part of his army, still defending the River Weser. Near Lubbecke, the Franks and Westphalian Saxons fought another battle where the Saxons again lost and were forced to give Charlemagne hostages. An addendum to the Royal Frankish Annals adds that before Charlemagne returned, a group of Saxons was able to enter the camp at Lubbecke and slaughter many soldiers while they were sleeping.The War ContinuesCharlemagne at Witikinds Baptism by Paul Thumann, 1894. Source: Wikimedia CommonsWhile campaigning in Saxony, Charlemagne heard that Hrodgaud was inciting Italy to rebellion. Once again, thinking that he had subdued Saxony, and with winter approaching, thus ending the campaigning season for 775, Charlemagne waited until the following year to handle him. In 776, Charlemagne entered Italy and killed Hrodgaud before Easter. Alas for Charlemagne, the Saxons took this opportunity to attack Castle Eresburg and destroy its walls. They sought to destroy Castle Syburg as well, but they could not enter inside like they had done previously, and their attempts at siegecraft proved futile. As the Saxons labored to destroy Syburg, the Franks regained their courage and launched an attack. They drove the Saxons back to the River Lippe and slaughtered many of them. Once Charlemagne heard of the Saxon attack, he gathered his forces in Worms and launched an attack.Exiled emirs before Charlemagne in Paderborn by Hermann Knackfu, 1871. Source: Wikimedia CommonsThe Royal Frankish Annals suggests that Charlemagnes reaction was becoming increasingly aggressive. Charlemagnes anger burned brighter than before, and he drove the Saxons back, instilling great terror into their hearts. They surrendered, handed over hostages, and converted to Christianity. Conversion was a new stipulation most likely to encourage assimilation into the empire.No battles took place in 777, but Charlemagne did host an assembly in his newly constructed palace at Paderborn, which lay in the heart of Saxony. There, many Saxons came to be baptized (except for Widukind, a Saxon who was still in rebellion and had fled to the Danes). The calm between Saxons and Franks would not last long. For a third time, Charlemagne thought that the Saxons would no longer be a bother. Because of this, he led a campaign over the Pyrenees Mountains into Umayyad Spain to wage war against the Arabs. While he was gone, Widukind led a rebellion against the Franks, burning churches and monasteries. As soon as Charlemagne heard of this breach of loyalty, he raced back to Saxony and met an army near the River Eder. Once again, he was victorious, though he took no hostages. Summer was quickly turning to fall, forcing the king to return to Francia for the winter.The War IntensifiedCollecting tithes from the Saxons by J. / P. Fansten, circa 1871. Source: Wikimedia CommonsIn 779, Charlemagne assembled in Duren and launched another Saxon campaign. This time, the Saxons put up resistance near Bocholt, but once again, Charlemagne put the Saxons to flight. Being early in the year, Charlemagne was able to continue deeper into Saxony, moving into Westphalia, where he received hostages from those on the other side of the River Weser. This battle concluded his campaign for that year. The years 780-781 proved to be peaceful years with Saxon lords submitting to baptism and fealty.Widukind and Charlemagne settling peace by J.P. Fansten, 1871. Source: Wikimedia CommonsThe year 782 proved to be a turning point in the Saxon wars. Not because the war would turn in either the Saxons or the Franks favor, but because King Charlemagne would unleash his harshest measures to subdue his most significant thorn. The year began well with the king assembling Saxons, Avars, and Norsemen. The only face that was wanting was Widukind. When the assembly was over and Charlemagne had headed home, Widukind showed his treachery and launched another rebellion in Saxony. In fact, Charlemagne had already sent an army to deal with some unruly Slavs. However, they turned aside to deal with Widukind, and in the engagement with Widukind, he nearly annihilated the Frankish army. Their actions would unleash the full wrath of Charlemagne.Charlemagne rushed into Saxony and met the rebels near the Aller and Weser rivers. Though Widukind was not present, the Saxons met Charlemagne, and he killed many in battle. He took many captives, and Charlemagne ordered 4,500 Saxons beheaded for their treachery.Peace at LastCharlemagne at Paderborn by Ary Schefferr, 1835. Source: Wikimedia CommonsIn the winter of 784-785, Charlemagne did not return to Francia but instead stayed in Eresburg, where he summoned his wife and children. From there, he continually engaged the Saxon rebels and eventually routed them. By the end of the winter season, Widukind entered Charlemagnes presence and submitted to baptism, swearing fealty.From this point on, the Saxons were part of the Frankish kingdom. They participated in wars with the Franks, such as in 789, when they led a campaign against the Slavs. However, the Saxons would rise again. In 794, a group of Saxons gathered in Sindfeld against two Frankish armies. Charlemagne led one, and the Chronicler did not mention who led the other. Once they knew that they were outnumbered and surrounded, the Saxons surrendered and swore oaths.Another revolt occurred in 798, and Charlemagne caused much destruction between the Elbe and the Weser. Thus ended the Saxon Wars for Charlemagne. For the rest of Charlemagnes life, the Saxons remained pacified, and Saxon lords became increasingly integrated in Francia.