 When Frederick, Count of Westphalia, arrived with his brother, also named Henry, and their substantial force, the emperor withdrew, barely escaping capture.Finally, in October 1114, the two armies met on a plain near Andernach.After an initial skirmish in which Duke Henry of Lorraine was forced to withdraw, the insurgent's troops and the emperor's force of Swabians, Bavarians, and Franconians clashed.