Chapter Seven.
In 749, the Avars, led by Khan Obalik, decided to start yet another of their assaults on their neighbors. This time, however, there was no centralized Merovingian state to oppose them in the west. Bavaria, their immediate and first target, was weakened by the recent civil war which it's king, Tassilo I, won at the expense of a good part of his army.
Albeit a cunning intriguer and a competent commander, Tassilo realized that resisting to the 60,000 well-trained Avar horsemen was rather... pointless. Instead, he decided to submit to them, and to rebel against them when an opportunity appeared. They accepted his surrender, but did not take any chances and killed him, as well as the Bavarian nobility, as an example to all the others. The example worked.
The Avars have, meanwhile, secured an alliance with the Saxons (who secured Frisia at that point, allowing them to raid Neustria's trade centers). West of Bavaria there was Austrasia, the strongest of the Frankish nations. Led by Childerick IV, it experienced a temporary rise in agriculture and was centralizing. Nevertheless, Childerick failed to defeat the Avars decisevely in the draw at Mossele Valley. Soon enough, the Saxons won the battle at Worms and burned down the church there. This defeat, albeit not a final one, dismoralized the Austrasians. The Saxons then won the Battle at Verdun Forest, ambushing Neustrian reinforcements, while the Avars besieged Metz. Childerick continued to resist even after the fall of his capital and the following massacre, but his followers abandoned him in September 753. By then the Avars captured Besancon, and imposed a huge tribute on Burgundy. Orleans, despite being a part of Burgundy, continued to resist for two months. It's garrison and population expected a miracle, but it never came. The Avars entered the city, and struck into Neustria.
Saxons have been warded off by King Lothar of Neustria in 755 at Vinchy and at Ghent, but Vitukind, the king of the Saxons, merely reorganized his army and restarted the raids. Lothar headed by far the most succesful resistance faced by the Avars, and at some point, his paladins regained hope in a victory, similar to the one at Catalunian Fields. But those newly-proclaimed Huns were, perhaps, more lucky. In 758, albeit tired, the Avars produced a victory at Sena, pinning the Neustrians to the river just as a small raider group of Saxons arrived, causing panic. Lothar escaped to Rennes with his followers, and managed to hold to this last stronghold due to the large casualties inflicted on his foes. Nevertheless, after his death, his dismoralized followers abandoned Rennes and went into the hiding.
Paused in May 761 by the death of Obalik, the Avars nevertheless tried to resume their expansion. Nevertheless, the raids on the Emirate of Garonne were defeated, while the Breton clans, rallied by their chieftain Arlinoe, put an end to the incursions into their territory in late 762. The Avar Khanate, stretching from Pannonia to Rennes, from Danube to Caeser's Channel (i.e. English Channel), was there to stay (it seemed so, anyway), as was the newly-created Saxon Empire.