The first proper tank-destroyer was the M10 Wolverine, which featured the hull of the M4 Sherman tank and a new pentagonal turret. General Motors and Ford produced 6,400 M10s.

These design requirements produced several tank destroyers that while faster than tanks like the Sherman, were more lightly armored. Tank destroyers, therefore, relied on speed and surprise when ...

It was an unusual delivery to the Heinz History Center -- a 37-ton Sherman tank now parked outside the museum as part of the center's "World War II -- We Can Do It" exhibit.

The Buick M18 Hellcat does resemble a tank, but history buffs are quick to point out, it's actually a tank destroyer (TD) -- a now-defunct U.S. Army armor class.

Of the 50,000-plus Sherman tanks made for the war effort, Mogge said, only about 50 worldwide are still working. Of those 50, perhaps 20 are in the United States.