Charles retreated to the hills of the Eifel to gather men, and train them. Having made the proper preparations, in April 716, he fell upon the triumphant army near Malmedy as it was returning to its own province. In the ensuing Battle of Amblève, Martel attacked as the enemy rested at midday. According to one source, he split his forces into several groups which fell at them from many sides. Another suggests that while this was his intention, he then decided, given the enemy's unpreparedness, this was not necessary. In any event, the suddenness of the assault led them to believe they were facing a much larger host. Many of the enemy fled and Martel's troops gathered the spoils of the camp. Martel's reputation increased considerably as a result, and he attracted more followers. This battle is often considered by historians as the turning point in Charles's struggle.