Boarhound I Armored Car

In July 1941 the US Army Ordnance office issued joint specifications with the British for three new armoured cars. The T17E1 specification called for a medium armored car which eventually became the Staghound, while the T18 called for a heavy armoured car.

The T18 prototype was developed in 1942 by the Yellow Truck & Coach Company as a large all-wheel-drive, eight-wheeler with the front four wheels steering. Its thick armor was unusual for an armoured car, although this extra protection brought the weight of the vehicle up to 26 tons—similar to contemporary medium tanks such as the M3 Lee and three times the weight of the equivalent German eight-wheeled armoured cars.
Initially armed with a M6 37mm gun, it became clear that the T28 would need a more powerful weapon and the final version, the T18E2, was fitted with the newly-designed M1 57mm gun, a US-manufactured variant of the British 6 pdr gun.

While the United States Army proved entirely uninterested in the vehicle, the British Army’s successful use of armoured cars in the Western Desert led them to place an order for 2500 T18E2 armoured cars, which they promptly christened the Boarhound. High production costs led to cancellation of the initial order after only 30 were delivered.

The T18E2 Boarhound armoured car was designed as a heavy armoured car to counter the German eight-wheeler Sd Kfz 231 (8-rad) series. With much thicker armor and a heavier gun, it succeeds in this role admirably.