In 1697 a last major Turkish attempt to conquer Hungary was made. Sultan Mustafa II personally led the invasion force. In a surprise attack, Habsburg Imperial forces engaged the Turkish army while it was halfway through crossing the Tisza (Theiß, Tisa) river. The Habsburg forces inflicted thousands of casualties, including the Grand Vizier, dispersed the remainder, captured the Ottoman treasury, and came away with such emblems of high Ottoman authority as the Seal of the Empire which had never been captured before. The European coalition's losses, on the other hand, were exceptionally light.