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Galerie photo d’un SU-57 sur base M3, Le СУ-57 ( T-48 ) est un canon automoteur léger de la Seconde Guerre mondiale, construit sur le châssis d’un transporteur blindé M3.
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Designation: M3 Gun Motor Carriage (GMC). It was the U.S. Army’s first motorized tank destroyer and an early example of the “shoot and scoot” doctrine.
Development and Role
The M3 GMC was a self-propelled anti-tank weapon developed by the United States Army in the early days of World War II. It was created as an interim solution by mounting a potent 75 mm field gun onto the reliable M3 Half-track chassis.
- Gun: It was armed with the 75 mm M1897A4 field gun, a modernized version of the famous French 75 gun of World War I, which offered a high muzzle velocity for anti-tank use.
- Doctrine: The M3 GMC embodied the U.S. Army’s Tank Destroyer doctrine, which prioritized mobility and firepower over armor. It was intended to quickly move into position, fire at enemy tanks from ambush, and rapidly relocate before the enemy could respond (the “shoot and scoot” philosophy).
- Защитна обвивка: To save weight and increase speed, the vehicle’s armor was relatively thin, offering protection mainly from small arms fire and shell fragments, but not from dedicated anti-tank rounds. The open top made the crew vulnerable to air bursts and artillery.
Combat History
The M3 GMC saw service in two primary theaters before being largely replaced by more specialized vehicles like the M10 Tank Destroyer.
- North Africa (European Theater): The M3 GMC made its combat debut in North Africa. It performed poorly when forced into direct, close-range engagements with heavier German tanks at the Battle of Kasserine Pass, confirming its role as an ambush weapon, not a frontline tank. It was phased out of major European action shortly thereafter.
- Pacific Theater: The M3 GMC found a more successful and extended career with the U.S. Marine Corps (USMC) in the Pacific. Its 75 mm gun proved highly effective against the generally lighter armored Japanese tanks and was invaluable for firing high-explosive rounds in a mobile role against enemy bunkers and fortifications.
- Варианти: The original M3 GMC used an existing gun shield (M2A3). The more common production version, the M3A1 GMC, featured a newly designed gun shield.
Specifications (M3 GMC)
Key Specifications (M3 GMC)
| Characteristic | Спецификация |
|---|---|
| Country of Origin | САЩ |
| Тип | Gun Motor Carriage / Tank Destroyer |
| Armament (Main) | 75 mm M1897A4 gun |
| Armament (Secondary) | .50 cal (12.7 mm) Browning M2HB machine gun |
| Chassis | M3 Полуписта |
| Екипажа | 5 (Commander, Gunner, Loader, Driver, Assistant Driver) |
| двигател | White 160AX (In-line 6-cylinder gasoline) |
| Max Speed (Road) | ~72 km/h (45 mph) |
| Production Total | Approximately 2,203 built (Many later converted) |
преглеждания : 2477
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