The junction was duly effected in 841, and the two brothers emphatically gave the emperor to understand that he must either consent to fulfil their just demands with regard to the above-mentioned partition, or else prepare to decide the matter by the force of arms. In the meanwhile, however, Lothair had succeeded in winning over to his side his nephew, Pepin of Aquitania, whom Charles the Bald had unjustly tried to dispossess. In order to gain time to effect a junction with Pepin’s army, he opened negotiations with Charles and Ludwig, which resulted in the conclusion of an armistice. The opposing armies were already drawn up close at hand; for Lothair had marched towards Auxerre, where Charles and Ludwig were encamped, to meet his nephew Pepin. During the armistice the junction of the fighting forces of Lothair and Pepin was effected, whereupon the former immediately broke off the negotiations and accepted the battle which the brothers proffered as an ordeal.
The decisive battle was fought at Fontenailles on June 25, 841. On the right wing of the allied army of Charles and Ludwig stood the Germans, and opposing them the emperor Lothair. It was there that hostilities commenced; the fight was obstinate, but the troops of Lothair were decidedly beaten by the Germans. The nephew Pepin held his position better on the right wing, but after the defeat of Lothair the Germans pressed Pepin hard, and he also was forced to yield. Charles the Bald and Ludwig the German had therefore won a complete victory. This was a most fortunate occurrence for the people, but it would have been still more favourable had they known how to make use of their victory. Here, however, they failed; for Charles and Ludwig, instead of pursuing the remnants of the defeated army and by energetic measures extorting a lasting peace, followed the advice of the clergy and commanded that the next three days should be devoted to fasting and prayer, in order to obtain counsel from heaven as to the next move to be made.
Lothair escaped to Aachen and Pepin to Aquitania. This necessitated the division of the victorious forces, for Ludwig withdrew to the right bank of the Rhine to protect Germany against Lothair, and Charles to Aquitania to uphold it against Pepin. As soon as he arrived at Aachen, Lothair resolved to adopt other means to carry through his plans.
The Saxons had made no attempt during the reign of Louis the Pious to detach themselves from the empire, and to re-establish their original constitution. The reason for this is probably to be sought in the lenient measures adopted against them by Louis I, for otherwise his weak government would seem to us to have afforded the most favourable opportunity of throwing off the Frankish domination. But the bitterness which had prevailed among the north Germans on account of the mighty oppression of Charles I had by no means vanished, but was on the contrary still tolerably widespread. The cunning Lothair made use of this circumstance to gain the Saxons over to his party. Under the condition that they should help him against his brother Ludwig, he promised to restore to them their ancient constitution. The nobles in Saxony were divided into two factions, adhering either to Lothair’s or Ludwig the German’s cause. Then Lothair turned to the freemen and villeins, who in proportion to the nobility naturally formed the majority; they listened to his suggestions. Freedom, in the sense in which it is generally used by modern historians, could not be granted by re-establishing the ancient constitution of Saxony, for in olden times there was no freedom among the Germans. But anger at the tithes with which Charles I had more especially burdened the Saxon villeins, the oppression of the officials appointed by the Frankish king, hatred of Christianity which was regarded as the cause of both, and the abuse of their constitutional rights finally induced the Saxon freemen and villeins to accept the perfidious proposals of Lothair. Had the rebellion now being planned been successful, the separation of north from south Germany would have been suddenly effected, and the establishment of the unity of the German Empire thereby long deferred. The alliance of the Saxons with Lothair was therefore in the highest degree injurious to patriotic aims. In order further to strengthen his might, the emperor endeavoured to win over the Normans also, and ignobly promised to allow them to plunder various countries if they would come to his assistance.
[841-842 A.D.]
Trusting in all these allies Lothair now determined to attack his brother Ludwig, and gathered together an army near Worms. Charles the Bald shrewdly recognised the danger of the situation, and advanced with his forces to the Rhine to support Ludwig. Lothair was thereby constrained to alter his tactics, and to force Charles to retreat before leading his army to oppose Ludwig. He therefore marched into the interior of Gaul. Charles thereupon retreated upon Paris where he entrenched. Lothair determined nevertheless to attack him, but he failed to cross the Seine owing to the rise of the river. After a renewal of peace negotiations, which were once more fruitless, between the two brothers, Lothair marched to meet his nephew Pepin in order again to join forces with him. This he succeeded in doing farther up the Seine at Sens. Charles the Bald proceeded hastily in the meanwhile to join Ludwig the German near the Rhine, which Ludwig had already reached. The two armies effected their junction at Strasburg in February, 842. From this time the brothers firmly resolved to put an end to all hesitation and to the aimless wandering hither and thither, and to bring the matter to a head. They mutually swore an oath of loyalty and indissolubility in the presence of their armies. Ludwig then addressed the assembled warriors, recounting the wrongs they had endured at the hands of Lothair and asserting his fixed determination to conclude an honourable alliance with Charles, absolving his men from their allegiance to him should he break his oath. At that time the national separation of the French and the Germans was already very marked; for Ludwig made his speech in German, repeating it in the Romance tongue in order that Charles’ warriors also should understand it. Hereupon the two kings and their armies swore a solemn oath of mutual loyalty and support.
LOTHAIR BROUGHT TO TERMS (842 A.D.)
[842 A.D.]
The camp was then broken up in order to bring on the crisis at once. Lothair had now returned from Gaul to Aachen, whither his adversaries marched with their armies. He endeavoured to entrench on the banks of the Moselle and to oppose the passage of the enemy, but his dispositions for the defence were miserably weak. The forces of Ludwig and Charles crossed the river without the slightest difficulty, and Lothair so lost his head as to take to flight hastily, never halting until he reached Lyons.