It was an act of treachery utterly undeserving of success. But it is not always the deserving to whom success comes, and Otho heard of the rapid approach of this army barely in time to take to flight, with his fear-winged flock of courtiers at his heels, leaving the city an easy prey to the enemy. Lothaire entered the city without a blow, plundered it as if he had taken it by storm, and ordered that the imperial eagle, which was erected in the grand square of Charles the Great, should have its beak turned westward, in token that Lorraine now belonged to France. Doubtless the great eagle turned creakingly on its support, thus moved by the hand of unkingly perfidy, and impatiently awaited for time and the tide of affairs to turn its beak again to the east. It had not long to wait. The fugitive emperor hastily called a diet of the princes and nobles at Dortmund, told them in impassioned eloquence of the faithless act of the French king, and called upon them for aid against the treacherous Lothaire. Little appeal was needed. The honor of Germany was concerned. Setting aside all the petty squabbles which rent the land, the indignant princes gathered their forces and placed them under Otho's command. By the 1st of October the late fugitive found himself at the head of a considerable army, and prepared to take revenge on his perfidious enemy. Into France he marched, and made his way with little opposition, by Rheims and Soissons, until the French capital lay before his eyes. Here the army encamped on the right bank of the Seine, around Montmartre, while their cavalry avenged the plundering of Aix-la-Chapelle by laying waste the country for many miles around. The French were evidently as little prepared for Otho's activity as he had been for Lothaire's treachery, and did not venture beyond the walls of their city, leaving the country a defenceless prey to the revengeful anger of the emperor.