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Overview

The Light Tank, T1 is an American light tank prototype developed in the 1920s. It was developed to replace the M1917 light tank.

Development

On the 24th of May, 1922, the Chief of Ordnance requested the Chief of Infantry to provide specifications and requirements for a new light tank. The response from the 6th of June states the new vehicle be a two-man vehicle armed with a 37mm gun and a .30 caliber machine gun, both of which to be operated by the gunner from the same position. The armour was to defend against .30 caliber armour piercing ammunition of the time, with impact angles greater than 45­°. The vehicle was not to exceed five short tons (~4,500kg) so it could be transported on a heavy-load truck.

In June 1924, Rock Island Arsenal was directed to focus on the production of a light tank, however the general attitude of those involved thought that a medium tank would be more useful. After much back-and-forth between departments, OCM 5165 dated 28 January 1926 recommended that the manufacturing service be authorized to begin development of light tanks, with the Chief of Ordnance ordering Rock Island Arsenal to proceed with development on a light tank on the 5th of February 1926.

Development by Rock Island Arsenal continued until the 1st of September 1926, where development was transferred to the Tank Board at Fort Meade in Maryland. The new developers moved the engine to the front of the vehicle due to weight concerns. By the 15th of March 1927, the manufacture of a pilot tank was ready to begin, with James Cunningham, Son & Company being awarded the contract on the 12th of April 1927. They were given 120 days to produce a pilot vehicle.

The pilot was completed on the 1st of August 1927, and designated the T1. The T1 pilot was demonstrated on the 1st of September 1927 at Rochester. The pilot was fitted with a mock-up superstructure and turret. Additional tests were performed at Aberdeen, where the vehicle was later converted to the Light Cargo Carrier, T1 — replacing the mock-up superstructure and turret with a wooden cargo body. Later modifications to this vehicle included the conversion into an artillery wire reel carrier.

The T1 was approved by the Chief of Infantry, who authorized the manufacture of six additional vehicles. These would be four Light Tank, T1E1 and two Light Cargo Carrier, T1E1 vehicles.

Variants

Light Tank, T1
Pilot vehicle from 1927, lacked superstructure and turret.
Light Tank, T1E1
Prototype from 1928, four made.
Light Tank, T1E2
Model with improved turret.
Light Tank, T1E3
Model with long barrelled 37mm gun.
Light Tank, T1E4
Model with improved suspension.
Light Tank, T1E5
Model with new steering system.
Light Tank, T1E6
Final model.

Derivatives

4.2 inch Mortar Motor Carriage, T1
Mortar carrier based on the Light Cargo Carrier, T1E1.
Light Cargo Carrier, T1
Cargo carrier conversion from the Light Tank, T1.
Light Cargo Carrier, T1E1
Cargo carrier based on the Light Tank, T1.
USA 1912 Land Vehicles of the United States of America USA Army
1919 - 1945
Tracked Vehicles
Light Tanks Tankettes CTL (11TB1233A3M3TBD4TAC4TAY6)
Standard Light Tanks CTMS-1TB1M1 (E2A1A1E1)Light Tank, M2 (A1A2A3A4)M3 ((early)(late)A1A3M5 (M5A1)M22M24T1 (E1E2E3E4E5E6)T2E1T2E2T3T5 (E1E2)T7 (E1E2E3E4E5)T9 (E1)T13 (E1)T16T21T24 (E1)T37MTLS-1G14
Amphibious Light Tanks LVT(A)-1LVT(A)-1/M24 TurretLVT(A)-4 (early)LVT(A)-4 (late)LVT(A)-5
Flamethrower Light Tanks Light Tank, M3 SatanT65
Medium Tanks Standard Medium Tanks Christie M1919Christie M1921Christie M1928Christie M1931A M1921M1M2M2A1M3 Lee (A1A2A3A4A5)M4 Sherman Series (M4 (early)M4 (mid)M4 (late)M4 HybridM4(105)M4(105) HVSSM4A1M4A1E9M4A1(76)WM4A1(76)W HVSSM4A2M4A2E4M4A2(76)WM4A2(76)W HVSSM4A3M4A3E2M4A3(76)WM4A3(76)W HVSSM4A3(105)M4A3(105) HVSSM4A4M4A5M4A6)M7T2T3 (E1E2)T4 (E1E2)T5T6T15T20 (E3)T22 (E1)T23 (E3HVSS)T25 (E1)T26 (E1E2E3E4E5)M26 "Pershing"M27M45MTL-1G14
Flamethrower Medium Tanks M4A3E8 POA-CWS-H5M4A3R3M4A3R5
Heavy Tanks Standard Heavy Tanks T1 (E1E2E3)M3M6 (A1A2A2E1-1)T14T28T29T30T32T34
Gun Carriages SPAA T19M19M19A1T52T53 (E1)T65T77 (E1)T77E1T85 (E1)
SPG 37mm T4237mm T5647mm M2A157mm T4857mm T4957mm T5675mm M375mm T6776.2mm M576.2mm M976.2mm M10 (A1)76.2mm M1876.2mm T7076.2mm T3590mm M36 (B1B2)90mm T53105mm M37105mm T95114.3mm T16155mm M12155mm M40203.2mm T93
SPH 75mm Christie75mm Holt75mm T175mm T375mm M875mm T1875mm T4175mm T47105mm M7105mm M37105mm T76105mm T82105mm T88155mm Christie155mm M41155mm T64 (E1)203.2mm M43240mm T92
SPM 81mm T27107mm T1107mm T2107mm T29107mm T38107mm T81
SPRA M17T34T39T72T73T76T99T105Sd.Kfz. 251 with T34 Calliope
Utility Cargo Carrier T22 (E1)T23
Tractor Allis Chalmers HD10WCaterpillar D7Ford T16Heavy Tractor, M1High Speed Tractor, M4High Speed Tractor, M5High Speed Tractor, M29International Harvester TD-18Light Snow Tractor, T15Light Snow Tractor, T24Light Tractor, T18LVT-1LVT-2LVT(A)-2LVT-3LVT-4
Prime Mover M33M35
Reconnaissance T8 (E1
Recovery & Engineering M31 (B2B3)T6 (E1)
Utility M39T41 (E1)
Half-Tracked Vehicles
Transport M2 (A1A2E6)M3 (A1A2E2)M5 (A1A2)M9 (M9A1)
T7T14T16T29T31
Trucks T15T16T17T18T19
Amphibious Transport T32
Gun Motor Carriages (GMC) M3, 75mm (A1)M34, 40mm
T12, 75mmT48, 57mmT54, 40mm (E1)T59, 40mm (E1)T60, 40mm (E1)T68, 40mm
Howitzer Motor Carriages (HMC) T19, 105mmT30, 75mmT34, 105mmT38, 105mm
Multiple Gun Motor Carriages (MGMC) M2 Halftrack (B-6)M13M14M15 (A1)M16 (A1)M17
T1 (E1E2E3E4)T10 (E1)T28 (E1)T58
Mortar Motor Carriages (MMC) 81mm M4 (A1)T19M21T21 (E1)
Utility Patton's Command VehicleRadio Carrier, T17T18 Instrument Carrier
Wheeled Vehicles
Combat Vehicles Armoured Cars M1T4M8T17 SeriesT17E1T18T18E1T18E2T19T21T22T27T28T29M38T43
Scout Cars M3M3A1T6T7T8T9T10T11T11E1T11E2
Gun Motor Carriages (GMC) 37mm M6 GMC75mm T66
Multiple Gun Motor Carriage (MGMC) T17E2T69
Howitzer Motor Carriage (HMC) 75mm T17E3 CS
Utility Transport & Towing Armored Utility Car, M20Autocar U-8144TBantan BRC40Brockway 666Brockway B666Chevrolet 3116Chevrolet G-7107Chevrolet NK G-7113Dodge VC-1Dodge VC-2Dodge VC-3Dodge VC-4Dodge VC-5Dodge VC-6Dodge VF-401Dodge VF-402Dodge VF-403Dodge VF-404Dodge VF-405Dodge VF-406Dodge VF-407Dodge WC-1Dodge WC-3Dodge WC-4Dodge WC-5Dodge WC-6Dodge WC-7Dodge WC-8Dodge WC-9Dodge WC-10Dodge WC-11Dodge WC-12Dodge WC-13Dodge WC-14Dodge WC-15Dodge WC-16Dodge WC-17Dodge WC-18Dodge WC-19Dodge WC-20Dodge WC-21Dodge WC-22Dodge WC-23Dodge WC-24Dodge WC-25Dodge WC-26Dodge WC-27Dodge WC-36Dodge WC-37Dodge WC-38Dodge WC-40Dodge WC-41Dodge WC-42Dodge WC-43Dodge WC-47Dodge WC-48Dodge WC-49Dodge WC-50Dodge WF-31Ford 21AFord G8TFord 2G8TFord GPFord GPAFord PigmyFWD SU-COEGMC ACKWX-353GMC AFWX-354GMC ACX-504GMC CCKW-352GMC CCKW-353International KR-11International M-5-6-318M25 Prime MoverM26 Prime MoverMack NR15Reo 28XSStudebaker US6x4 U6Studebaker US6x4 U8Studebaker US6x6 U1Studebaker US6x6 U2Studebaker US6x6 U3Studebaker US6x6 U4Studebaker US6x6 U5Studebaker US6x6 U7Studebaker US6x6 U9Studebaker US6x6 U10Studebaker US6x6 U11Studebaker US6x6 U12Studebaker US6x6 U13Trackless Tank, T13Willys MAWillys MB (early)Willys MB (late)Willys MB AmbulanceWhite 666
Amphibious Transport & Towing GMC DUKW-353
Bridgelaying Brockway B666 Daybrook M-II-A Bridge Erector
Cranes & Construction Brockway C666 Quick-Way Revolving Crane
Motorcycles BSA M20Harley Davidson 42WLAHarley Davidson 43WLCHarley Davidson EL (ELAELC)Harley Davidson MT350 (E)Harley Davidson MT500Harley Davidson UL (ULA)Harley Davidson XAIndian 741Indian 841Norton WD16HTriumph Model H
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