The Panther was a German medium tank deployed during World War II on the Eastern and Western Fronts in Europe from mid-1943 to its end in 1945. It had the ordnance inventory designation of Sd.Kfz. 171. It was designated as the Panzerkampfwagen V Panther until 27 February 1944, when Hitler ordered that the Roman numeral "V" be deleted. Contemporary English language reports sometimes refer to it as the Mark V.
The Panther was intended to counter the Soviet T-34 and to replace the Panzer III and Panzer IV. Nevertheless, it served alongside the Panzer IV and the heavier Tiger I until the end of the war. It is considered one of the best tanks of World War II for its excellent firepower and protection, although its reliability was less impressive.
The Panther was a compromise. While having essentially the same engine as the Tiger I, it had more efficient frontal hull armor, better gun penetration, was lighter and faster, and could traverse rough terrain better than the Tiger I. The trade-off was weaker side armor, which made it vulnerable to flanking fire. The Panther proved to be effective in open country and long range engagements but did not provide enough high explosive firepower against infantry.