| Year | July 1936 |
| Vehicle Type | Medium Tank |
| Origin & Designer | Britain/Vickers |
| Numbers Produced | 125 |
| Crew | 6 (Commander, Gunner, Loader, 2 x MG Gunners & Driver) |
| Main Armament | 1 x OQF 2 pdr L/50 Mk. IX Gun |
| Main Armament | [@sponson_traverse] |
| Elevation | -15° to +20° |
| Turret Traverse | 360° (Powered) |
| Gun Traverse | [@gun_traverse] |
| Gun Mount | [@gun_mounts] |
| Maximum Range | [@maximum_range] |
| Armour Penetration | [@armour_penetration] |
| Gun Sight | No. 33 Mk. II S |
| Secondary Armament | 1 x .303in Vickers Machine Gun (Coaxial). 2 x .303in Vickers Machine Guns (Hull Turrets). |
| Smoke Discharger | [@smoke_discharger] |
| Ammunition Carried | 100 x 40mm & 3000 x .303in Rounds |
| Height | 2.65m |
| Width | 2.50m |
| Length | 5.79m |
| Combat Weight | 12.730 kg |
| Ground Clearance | 0.46m |
| Fording Depth | 0.91m |
| Trench Crossing | 2.43m |
| Obstacle Clearance | 0.92m |
| Climbing Ability | 30° |
| Radio | No. 19 Set |
| Armour | Hull Front: 14mm. Hull Sides: 10mm. Hull Rear: 10mm. Hull Top: 5mm. Hull Bottom: 7mm. Gun Mantlet: 14mm. Turret Front: 14mm. Turret Sides: 12mm. Turret Rear: 14mm. Turret Top: 4mm. |
| Engine | AEC A179 (Petrol) |
| Transmission | 5 Forward & 1 Reverse |
| Maximum Road Range | 240 km |
| Maximum Cross Country Range | 151 km |
| Maximum Water Range | [@maximum_water_range] |
| Maximum Road Speed | 40 kph |
| Maximum Cross Country Speed | 24 kph |
| Maximum Water Speed | [@maximum_water_speed] |
| Variants | A9 CS: Close Support Variant with one 3.7in L/15 Mk.IV Howitzer (40 x 3.7in Rounds) |
| Notes | The first in the line of British cruiser class tanks, these along with the slower Infantry tanks formed the basis of future armoured warfare within the British army. The tank itself was prone to breakdowns but went on to serve in France, Greece and North Africa. |