what is mackensen-class battlecruiser?
Last class of battlecruisers built during WW1
Mackensen-class battlecruiser
The "Mackensen" class was the last class of battlecruisers to be built by Germany in World War I. 
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Mackensen-class battlecruiser [SEP] Introduction
The "Mackensen" class was the last class of battlecruisers to be built by Germany in World War I. The design initially called for seven ships, but three of them were redesigned as the . Of the four ships of the "Mackensen" class, "Mackensen", "Graf Spee", and "Prinz Eitel Friedrich" were launched, and "Fürst Bismarck" was not—but none were completed, after wartime shipbuilding priorities were redirected towards U-boat—and the ships were broken up in the early 1920s. The lead ship of the class was named for August von Mackensen, a prominent military commander during the war. In response to the "Mackensen"-class ships, the British Royal Navy laid down the s, all but one of which would eventually be cancelled; the sole survivor, , was completed after the end of the war.