1930 жылдардың американ жеңіл танкысы: M2 моделінің тарихы

1930s United States light tank
the modern infantry fighting vehicle

The M2 light tank, officially Light Tank, M2, was an American light tank of the interwar period which saw limited service during World War II. The most common model, the M2A4, was equipped with one M5 gun and five .30 cal M1919 Browning machine guns. It was originally developed from the prototype T2 light tank built by the Rock Island Arsenal, which had a Vickers type leaf spring suspension. The suspension was replaced by the superior vertical volute system in the T2E1 series of 1935. This was put into production with minor modifications as the M2A1 in 1936, with ten produced. The main pre war version was the M2A2, with 239 produced, becoming the main tank of the United States Army during the interwar period. The Spanish Civil War showed that tanks armed only with machine guns were ineffective. This led to the M2A4 with a 37 mm gun as the main armament. A total of 375 were delivered, the last ten as late as April 1942. The tank's only combat service was with the United States Marine Corps' 1st Tank Battalion in 1942 during the Pacific War. While some sources claim that the M2A4 saw action with British Army tank units in the Burma campaign against the Imperial Japanese Armed Forces, historian Mike Green states that the tanks were never issued to combat units. The T2E1 was selected for production in 1935 as the M2, which mounted only the M2 Browning in a small one man turret, and the .30 cal in the hull. After only 10 units were delivered, the Infantry Branch decided to switch to a twin turret configuration in the M2E2, with a .30 caliber (7.62 mm) machine gun in a second turret. These early twin turret tanks were given the nickname "Mae West" by the troops, after the popular busty movie star. The twin turret layout was inefficient, but was a common feature of 1930s light tanks derived from the Vickers. Following the Spanish Civil War, most armies, including the U. S. Army, realized that they needed tanks armed with cannon and not merely with machine guns. The Cavalry had already opted for a single, larger turret on its nearly identical M1 combat car. In December 1938, OCM No. 14844 directed that a single M2A3 be removed from the assembly line and modified with heavier armor and weapons, to meet the standards of the U. S. Infantry. This vehicle, after conversion, was re designated as the M2A4. It was equipped with an M5 37 mm main gun, 1 inch (25 mm) thick armor, and a seven cylinder gasoline engine. Other upgrades included improved suspension, improved transmission, and better engine cooling. Production of the M2A4 began in May 1940 at the American Car and Foundry Company, and continued through March 1941; an additional ten M2A4s were assembled in April 1942, for a total production run of 375 M2A4 light tanks. The Ordnance Department viewed the M2A4 as a stopgap tank; work to improve it further began in June 1940. The first M3 Stuart tanks began to be produced in March 1941; the original riveted M3s closely resembled the M2A4, and the two types occasionally served in the same units; an easy recognition feature was the rear idler wheel. On the M2A4, the idler was raised; on the M3 it trailed on the ground, increasing the flotation of the heavier vehicle. with weight increased to 14 tons. The tank initially kept the same 37 mm gun and the forward firing hull machine guns, but the turret incorporated improvements. Eventually over 4,500 examples of all variants were produced.

By December 1941, the M2A1, M2A2 and M2A3 were used for training only. The majority of M2A4s, which went to the US Army, were also used only for training between 1940 and 1942. The US Marine Corps ordered M3 Stuart tanks to outfit its armored units in 1940, but as the new tank was not yet in production, it received 36 M2A4s, after which point production of the M3 had come on line. Many of these tanks were deployed during the Battle of Guadalcanal while assigned to A Company, 1st Tank Battalion, where they and M3 Stuarts were typically spread out among infantry units. Their use was generally limited to providing mobile fire support to the Marines, either in disabling Japanese bunkers or using canister shot against Japanese attacks. In defensive engagements, the M2A4s and Stuarts would deploy in pairs, so they could cover each other with machine gun fire against Japanese soldiers armed with satchel charges. Ultimately, the Marine Corps determined that the 37 mm guns of the M2s and M3s were not powerful enough to defeat Japanese bunkers, and so they would be replaced with tanks armed with 75 mm guns. Following the end of the Guadalcanal campaign, A Company returned to Australia, where the M2A4s were replaced with the new M4 Shermans in preparation for the Battle of Cape Gloucester in December 1943. They remained in service in some areas of the Pacific Theater until 1943. After they served in the Pacific, they were used for training. The commander turned the turret onto the general direction of target. The gunner would then bring the target into the M5 telescopic sight. The M20 combination mount had 20° of traverse; this could either be by a handwheel driving the rack and pinion traverse gear mechanism or pressure on the gunners shoulder rest overcoming the friction in the mechanism. Depression and elevation of the gun was either through a geared mechanism or, with the gears disengaged, free through movement of the gunner's shoulder rest.

The M2A4 was 14 feet (4 m) long, 8 feet (2 m) wide, 8 feet (2 m) high, and weighed It had a vertical volute spring suspension and had a speed of , and had a range of 200 mile (322 km). It had one M5 37 mm gun (with 103 rounds), and five .30/06 cal M1919A4 Browning machine guns (with 8,470 rounds) with 6 to 25 mm of armor.