M1 Scout Car
The M1 Scout Car was the first of a new series of armored cars developed by the White Motor Company for the US Army.
Tested in 1934, the M1 Scout Car was an improvised, open topped four-wheel drive vehicle based on a commercial White ½-ton truck design.
It weighed appropriately 3.85 short tons (3.49 t), was powered by a 75 hp (56 kW) engine, and had a top speed of 50 mph (80 km/h).
The M1 Scout Car had a crew of four, a maximum armor thickness of .5 in (13 mm) and was armed with machine guns mounted on static mounts inside the vehicle.
Seventy-six M1 Scout Cars were delivered to the US Army.

M2 Scout Car
The M2 Scout Car was a development of the M1, tested in 1935 the almost identical looking M2 was larger and more powerful, designed with as many commercial components as possible to keep costs down it could accommodate a crew of seven.
The M2 Scout Car weighed appropriately 3.95 short tons (3.58 t), was powered by a 94 hp (70 kW) engine and retained the top speed of 50 mph (80 km/h).
Twenty M2 Scout Cars were delivered to the US Army.

M2A1 / M3 Scout Car
The M2A1 Scout Car, later redesignated the M3 Scout Car, was a further development of the M1 and M2 Scout Cars.
The M2A1 / M3 Scout Car retained the 94 hp (70 kW) engine and had a top speed of 60 mph (97 km/h).
Sixty-four M2A1 / M3 Scout Cars were produced, all being assigned to the 7th Cavalry Brigade.

M3A1 Scout Car
The M3A1 Scout Car was the final development of the series.
Primary external differences from the M3 were a widening of the body over the fenders, the removal of the rear door of the M3 and the addition of the front roller.
Internally, the M3A1 had an improved engine and was fitted with the machine gun skate rail.
A total of 20,918 were produced between 1939–1944.
It was the only version to see service outside of the United States.

The M3A1E1 Scout Car was developed to increase the range and fuel economy of the vehicle, it was powered by an 81 hp (60 kW) Buda-Lanova 6DT-317 six-cylinder diesel engine.
3,340 were produced, all were sent to the Soviet Union.

The M3A1E2 Scout Car was a version with an armored roof.
The M3A1E3 Scout Car was an experimental version fitted with a pedestal mounted 37 mm Gun M3.
The M3A1 Command Car was a command version, fitted with an armoured screen and additional side armor.

The M2 Half Track was developed from the M3A1 Scout Car by adding half tracks to the rear of the vehicle.
The post-War BTR-40 was a Soviet copy of the M3A1 Scout Car.
M1 Scout Car
The M1 Scout Car was the first of a new series of armored cars developed by the White Motor Company for the US Army. Tested in 1934, the M1 Scout Car was an improvised, open topped four-wheel drive vehicle based on a commercial White ½-ton truck design. It weighed appropriately 3.85 short tons (3.49 t), was powered by a 75 hp (56 kW) engine, and had a top speed of 50 mph (80 km/h). The M1 Scout Car had a crew of four, a maximum armor thickness of .5 in (13 mm) and was armed with machine guns mounted on static mounts inside the vehicle. Seventy-six M1 Scout Cars were delivered to the US Army.
M2 Scout Car
The M2 Scout Car was a development of the M1, tested in 1935 the almost identical looking M2 was larger and more powerful, designed with as many commercial components as possible to keep costs down it could accommodate a crew of seven. The M2 Scout Car weighed appropriately 3.95 short tons (3.58 t), was powered by a 94 hp (70 kW) engine and retained the top speed of 50 mph (80 km/h). Twenty M2 Scout Cars were delivered to the US Army.
M2A1 / M3 Scout Car
The M2A1 Scout Car, later redesignated the M3 Scout Car, was a further development of the M1 and M2 Scout Cars. The M2A1 / M3 Scout Car retained the 94 hp (70 kW) engine and had a top speed of 60 mph (97 km/h). Sixty-four M2A1 / M3 Scout Cars were produced, all being assigned to the 7th Cavalry Brigade.
M3A1 Scout Car
The M3A1 Scout Car was the final development of the series. Primary external differences from the M3 were a widening of the body over the fenders, the removal of the rear door of the M3 and the addition of the front roller. Internally, the M3A1 had an improved engine and was fitted with the machine gun skate rail. A total of 20,918 were produced between 1939–1944. It was the only version to see service outside of the United States.
The M3A1E1 Scout Car was developed to increase the range and fuel economy of the vehicle, it was powered by an 81 hp (60 kW) Buda-Lanova 6DT-317 six-cylinder diesel engine. 3,340 were produced, all were sent to the Soviet Union.
The M3A1E2 Scout Car was a version with an armored roof. The M3A1E3 Scout Car was an experimental version fitted with a pedestal mounted 37 mm Gun M3. The M3A1 Command Car was a command version, fitted with an armoured screen and additional side armor.
The M2 Half Track was developed from the M3A1 Scout Car by adding half tracks to the rear of the vehicle. The post-War BTR-40 was a Soviet copy of the M3A1 Scout Car.
M3 Scout Car