The allied command structure had thought the Panther tanks seen in Italy were an unusual heavy tank, and would only be seen in northern France in small numbers, much the same way as the Tiger I was seen in Tunisia. The US Army was confident that the Sherman tank would perform well against the German Panzer Mk III and IV tanks which they expected to meet. Shortly before D-Day, rumors indicated that large numbers of Panther tanks were being used in the panzer divisions.