The M8 light armored car is a 6×6 armored car produced by the Ford Motor Company during World War II. It was used from 1943 by United States and British forces in Europe and the Pacific until the end of the war. The vehicle was widely exported and as of 2006 still remained in service with some countries.
In British service, the M8 was known as the “Greyhound”, a nickname seldom, if ever, used by the US. The British Army found it too lightly armored, particularly the hull floor, which anti-tank mines could easily penetrate (the crews’ solution was lining the floor of the crew compartment with sandbags). Nevertheless, it was produced in large numbers. The M8 Greyhound’s excellent road mobility made it a great supportive element in the advancing American and British armored columns. It was marginal cross country, especially in mud.
The M8’s armor was thin, but it provided protection for the crew from small-arms fire and shrapnel, enough so that the vehicle could carry out its main mission of reconnaissance. The frontal, sloped hull armor varied in thickness from 0.5 to 0.75 inches (13 to 19 millimetres) The side and rear hull armor, also sloped but slightly less so than the front, was 0.375 inches (9.5 mm) thick. The top armor was 0.25 inches (6.4 mm) thick, as was the floor. The turret was comparatively better protected than the hull, being 0.75 inches (19 mm) thick all around, with an 0.25-inch (6.4 mm) partial roof. The cast, rounded gun shield was uniformly 1 inch (25 mm) thick.
The M8 was fitted with a 37 mm M6 gun (aimed by an M70D telescopic sight) and a coaxially mounted .30 in (7.62 mm) Browning machine gun in a one-piece, cast mantlet, mounted in an open-topped, welded turret. The M8 was initially fitted without any kind of anti-aircraft defense; as a stopgap solution a .50 caliber Browning M2HB machine gun on a ring mount was retrofitted to nearly all vehicles already in service. A purpose-designed pintle was mounted on all late-production vehicles, but it saw comparatively little action due to a troubled development process.
