The Abrams Block III Tank Test Bed (TTB) was a radical revision of the M1 Abrams that began development in the 1980s. It featured an… | Instagram
![Ronkainen on X: "The Abrams Tank Test Bed (TTB) prototype is on display in the US Armor & Cavalry Museum at Fort Benning, GA. The TTB has a 120mm unmanned turret and Ronkainen on X: "The Abrams Tank Test Bed (TTB) prototype is on display in the US Armor & Cavalry Museum at Fort Benning, GA. The TTB has a 120mm unmanned turret and](https://pbs.twimg.com/media/FvCn2dzaUAEqthZ.jpg)
Ronkainen on X: "The Abrams Tank Test Bed (TTB) prototype is on display in the US Armor & Cavalry Museum at Fort Benning, GA. The TTB has a 120mm unmanned turret and
![U.S. Army Armor & Cavalry Collection on X: "After the Tiger II yesterday, we jump ahead several decades to the M1 Abrams Block III Tank Test Bed (TTB). Designed in the 1980s U.S. Army Armor & Cavalry Collection on X: "After the Tiger II yesterday, we jump ahead several decades to the M1 Abrams Block III Tank Test Bed (TTB). Designed in the 1980s](https://pbs.twimg.com/media/E7d-KHfXIAo4JlB.jpg:large)