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M-24 Chaffee Light Tank

The M-24 Chaffee Light Tank was named by the British after General Adna R. Chaffee, who was the chief proponent of armored warfare in the United States before the start of WWII.
©2007 Publications International, Ltd.

The M-24 Chaffee Light Tank grew out of British experience in North Africa with the M-3 Stuart. The light tank's agility and speed was very desirable, but the M-3/M-5 series was too lightly gunned to be of much value after Germany introduced the Pz.Kpfw III, Pz.Kpfw IV, and Pz.Kpfw V Panther.

In April 1943 design studies began for a new light tank that would retain the best features of the M-3/M-5 but couple them to a heavier gun. The lightweight 75 millimeter M6 gun developed for the B-25 Mitchell attack bomber was selected. Its short recoil mechanism was ideally suited for the close confines of a tank's turret.

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The Cadillac Division of General Motors, which had been so instrumental in the development of the M-5 Light Tank, was chosen as the major designer. They first tested the 75mm M6 gun on the M-8 Howitzer Motor Carriage -- which used the M-5 hull and chassis. The concept worked, but the M-5's hull and chassis were not large enough.

Another design, taken from the T-7 experimental light tank, was selected instead. The T-7 chassis was larger and heavier but still within the overall 18-ton weight limit. The same twin Cadillac V-8 engines and hydromatic transmission used in the M-5 were fitted to the new chassis. They were mounted on rails for quick access and removal.

The M-24 Chaffee Light Tank succeeded the M-3 Stuart/M-5 Light Tank in May 1944.
The M-24 Chaffee Light Tank succeeded the M-3 Stuart/M-5 Light Tank in May 1944.
©2007 Publications International, Ltd.

Armor protection was kept low, from a maximum of 2.5 inches in the turret to a minimum of .9 inch on the hull top, to save weight. But the new light tank's armor was rounded and sloped to achieve greater armor protection than the M-5. In keeping with the theory behind the use of light tanks, the M-24's speed and agility were to make up for what it lost in armor protection.

The new tank was designated the T-24 for testing, which started in October 1943. Initial tests proved so successful that an order for 1,000 was placed immediately. The order was later increased to 5,000. The M-24 -- as it was designated for operational purposes -- was produced by both Cadillac and Massey-Harris. A total of 4,415 were manufactured before the war ended in 1945.

The first M-24s reached American armored units in November 1944 and served throughout the European theater until the end of the war. British forces also received the new M-24, although in nowhere near the numbers of either the M-3 or M-5, and named it after General Adna R. Chaffee, the first commander of the United States armored forces. The United States subsequently adopted the name.

These American tankers and their M-24 Chaffee Light Tank guard a strong point near Degu in northwestern Italy.
These American tankers and their M-24 Chaffee Light Tank guard a strong point near Degu in northwestern Italy.
©2007 Publications International, Ltd.

The M-24 saw extensive service in Korea as part of the "combat team" approach, adopted in 1944. In the combat team, one tank design in each category -- light, medium, and heavy -- was standardized, and its chassis, hull, and power plant served as the basis for the special-purpose vehicles needed to support the tanks in the combat team.

The Light Weight combat team Included the antiaircraft tank M-19 Gun, Motor Carriage, which mounted twin 40mm antiaircraft guns, and a self-propelled howitzer -- either the M-41 Howitzer Motor Carriage, mounting a 155mm Ml howitzer, or the M-37 Howitzer Motor Carriage, mounting a 105mm M4 howitzer. A recovery vehicle was also intended as part of the team, but it was never produced.

The M-24 was widely used by the United States and other countries, including Great Britain, long after World War II. Even in the late 1980s the M-24 could still be found in operation with a number of smaller nations.

Continue to the next page to learn the specifications of the M-24 Chaffee Light Tank.

For more information about tanks and the military, see:

The M-24 Chaffee Light Tank was armed with a 75mm main gun and two Browning .30 caliber machine guns.
The M-24 Chaffee Light Tank was armed with a 75mm main gun and two Browning .30 caliber machine guns.
©2007 Publications International, Ltd.

The M-24 Chaffee Light Tank sought to combine the speed and mobility of the M-3 Stuart with newer, more powerful weaponry. Find the specifications for this light tank here:

Date of service: 1944

Country: United States of America

Type: Light Tank

Dimensions: Length, 5.49 m (18 ft); width, 2.95 m (9.7 ft); height, 2.77 m (9 ft)

Combat weight: 18,207 kg (20 tons)

Engine: Twin Cadillac 44T24 V-8 220 horsepower gasoline

Armament: One 75mm M6 main gun; two .30 caliber Browning machine guns; one .50 caliber Browning machine gun; one M3 mortar

Crew: 5

Speed: 54 km/h (33.5 mph)

Range: 160 km (99 mi)

Obstacle/grade performance: 0.9 m (3 ft)

For more information about tanks and the military, see:

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