series of battle tanks fielded by the German army in the 1930s and '40s. The six tanks in the series constituted virtually all of Germany's tank production from 1934 until the end of World War II in 1945. Panzers provided the striking power of Germany's panzer (armoured) divisions throughout the war.
In the period following World War I, the German army had been prohibited by the Treaty of Versailles from using tanks. After Adolf Hitler came to power in 1933, however, the army began to rebuild its tank forces, secretly at first and then openly from 1938 on. This late reentry into tank manufacturing actually conferred a distinct advantage on the German army, which entered World War II without being hampered by masses of obsolescent tanks, as was the case with France, Great Britain, and the Soviet Union. The German army began issuing specifications for its first tank, the Pz. I, in late 1933, and specifications for models II through IV were issued in the following three years.