The Assault Tank T14 was a joint project heavy tank between the United States and the United Kingdom. The T14 tank was supposed to be a design that was to be shared by both countries to give an infantry tank for British use.
The pilot model was not produced by 1944 by which time the British Churchill tank had been in service for two years and greatly improved over its initial model. The T14 project never came to fruition. US efforts working on a similarly well armoured tank but with a higher speed for use other than in infantry support led to the T20 tank.
In 1941, the head of the United States Ordnance Department traveled to Britain to discuss designing a well-armed and armoured combat vehicle, one that was stronger than the British Tank, Infantry, Mk IV (A22) "Churchill" then under production.
The tank design would have a 6 pdr or a US 75 mm gun sharing many parts with the M4 Sherman but with armour twice as thick as that of the M4 at 101 mm thick.
The British initially ordered 8,500 in 1942. Testing of the pilot model which was completed in 1944 showed the vehicle to be much too heavy for practical use. By this time, the British Army was already using the Churchill and further production of the T14 was halted. Only 2 were built; one tested in the US and the other sent to Britain. The example sent to Britain survives in the Bovington tank museum.| Assault Tank T14 | |
|---|---|
| Type | Heavy tank |
| Place of origin |  United States |
| Production history | |
| Manufacturer | American Locomotive Company |
| Specifications | |
| Weight | 41 tons |
| Length | 6.19 m |
| Width | 3.17 m |
| Height | 2.99 m |
| Crew | 5 (Commander, gunner, loader, driver, co-driver) |
| | |
| Armor | 50 to 76 mm |
| Main armament | 75 mm M3 Gun 50 rounds |
| Secondary armament | .50 M2 Browning machine gun (12.7 mm) 2x .30 M1919 Browning machine gun (7.62 mm) 9,000 rounds |
| Engine | Ford GAZ V8 520 hp (390 kW) |
| Suspension | HVSS |
| Operational range | 161 km |
| Speed | 28 km/h |
