Overview and identity
The A10, standardized as the Cruiser Tank Mk II, developed from the A9 but exchanged its two small forward machine-gun turrets for a more conventional protected hull front and thicker armor. The result illustrates the difficulty of obtaining substantially greater protection from an existing automotive arrangement without losing mobility. Although an infantry-support requirement shaped its early development, the vehicle entered the cruiser category rather than becoming the eventual standard infantry tank. Sources
The accounts distinguish the ordinary gun tank, revised machine-gun arrangements commonly represented by Mk IA or Cruiser IIA terminology, and the close-support vehicle. Prototype labels and production labels are not interchangeable. Its frequently quoted total of 175 also coexists with a 170-vehicle contract figure. Those numbers need definitions for pilots, close-support vehicles and delivered production before they can be reconciled. Sources
From the A9 to the A10
The A9 supplied a starting point when British designers considered a more heavily protected tank. Removing the auxiliary turrets simplified the forward fighting arrangement, while thicker plates increased weight. The A10E1 prototype, associated in the cited sources with T1479 and registration BMM 835, appeared in 1937. Its increased protection remained short of the heavier infantry-tank requirement subsequently pursued through the A12. Sources
The development history therefore cannot be reduced to a failed attempt to build a Matilda. The A10 became a production cruiser in its own right, while experimentation with a further Vickers design contributed to the path toward Valentine. That relationship is important, but does not make later Valentine production part of the A10 ledger. Published accounts describe prototype testing, adoption, contracts and actual deliveries as separate stages. Sources
Crew, hull and fighting arrangement
The standard arrangement placed a driver and forward machine gunner in the hull, with a commander, gunner and loader in the main turret. The principal working description is thus a five-man vehicle, not a claim that every caption or published summary agrees. Sources
The riveted hull used supplementary protection to reach a maximum of about 30 mm, with thinner surfaces elsewhere. Its compact turret and forward compartment still imposed restrictions on movement, visibility and maintenance access. Deleting two small turrets did not remove every ergonomic compromise inherited from the earlier design. Sources
Gun tanks and close support
The normal tank carried a 2-pounder gun, approximately 40 mm in caliber, with machine guns in the turret and hull. The available evidence distinguishes early Vickers equipment from Besa installations, but exact changes to individual mounts and production batches remain manual-level questions. The commonly listed 100 main-gun rounds are a representative stowage figure, not an inventory verified for every operational vehicle. Sources
The close-support A10 substituted a 3.7-inch howitzer. Its role and ammunition cannot be copied from the A12 Matilda close-support tank, which used a different weapon. Smoke and high-explosive allocations require their own dated instructions. Sources
Automotive characteristics
An AEC A179 petrol engine of about 150 hp powered the production design. The suspension remained a bogie system, not the Christie arrangement associated with later cruiser families. Additional armor and a working weight around 14 tonnes left the A10 slower than the A9. Source speed and range figures are retained with their units and qualifications instead of being combined into a supposed universal performance envelope. Sources
Accounts describe a road maximum near 16 mph, with poorer cross-country performance. Such values say little by themselves about a unit's sustained march rate. Cooling, tracks, suspension wear, spares and the recovery situation all affected operational availability. Contemporary maintenance photographs are therefore useful evidence of service conditions, but a damaged vehicle in one scene cannot establish an entire theater's mechanical-loss percentage. Sources
Manufacture and deployment
Manufacturing accounts involve Vickers and several additional industrial firms, with their precise allocations and subcontracting roles still under review. Close-support versions and prototypes fall within particular production accounts rather than automatically adding to every quoted total. Sources
The service narrative includes France in 1940, the Middle East and North Africa, and Greece in 1941. These settings imposed different demands and do not support one undifferentiated reliability verdict. Photographs of abandoned tanks in Greece demonstrate the recorded scene, but do not prove a standing German operational fleet. Claims of French emergency use likewise remain qualified until identifiable vehicles or unit records establish what actually happened. Sources
Assessment and surviving evidence
The A10 shows a practical but limited attempt to trade speed for protection using an existing design base. Its gun could be useful against early armor, while its protection and automotive limitations narrowed the situations in which crews could exploit that weapon. Neither the cruiser designation nor the earlier infantry requirement explains every battlefield result. Sources
The preserved close-support tank, T9261, offers a valuable visual reference for hull form and weapon arrangement. Its own history and restoration is separate from a generic combat biography. For the encyclopedia, the strongest structure is a shared development article linked to clearly defined configurations, with surviving objects, period photographs and manual references assigned to the versions they actually document. Sources
Photographs and image credits
Background reading and references. Each photograph has its own source and credit.
Sources and further reading
Background reading and references. Each photograph has its own source and credit.
- Australian War Memorial collection record LIB23745, Tanks, cruiser, A9 and A10 (Marks I and IA): instruction book, 1940 / War Office — Primary-source handbook record confirming the War Office instruction book for A9/A10 Marks I and IA
- The Tank Museum, Valentine: What is in a name? — Vickers, Sir John Carden, A9/A10 lineage, and Valentine relationship
- The Tank Museum collection page, Valentine — War Office request to Vickers in 1938 and A10-derived Valentine development context
- The Queen's Royal Hussars Museum, A10 Cruiser — Operational description, A9/A10 relationship, armor/machine-gun changes, service date and museum-regimental context; crew count conflicts with other sources
- Armor Archives, Cruiser Tank Mk.II: With Best Intentions — Development sequence, A10E1 trials, A10E2, production contracts, armament changes, and variant terminology
- Tank-AFV, A10 Cruiser Mk.II — Technical specifications, variant list, general combat service summary, and common 175-vehicle production total
- WW2DB, Cruiser Mk II Cruiser Tank — Secondary specification summary and production split; page itself cites Wikipedia, so it is
- Military Factory, Cruiser Tank Mk II (A10) — Secondary specification/variant overview and production-order chronology; useful for triangulation, not used alone for disputed facts
- Imperial War Museums collection object E 1001, THE BRITISH ARMY IN NORTH AFRICA 1940 — Photographic evidence of A10 Cruiser tanks in the Western Desert, 1 November 1940; IWM Non Commercial License
- Imperial War Museums collection object E 1002, THE BRITISH ARMY IN NORTH AFRICA 1940 — Photographic evidence of an A10 Cruiser Mk II under maintenance in the Western Desert, 1 November 1940; IWM Non Commercial License
- Tank Encyclopedia, Cruiser A.10 and A.13 in French Service — uncertain discussion of possible French emergency operation of abandoned British cruiser tanks in 1940
- Wikimedia Commons, File:Cruiser Tank Mk II.jpg — Public-domain United Kingdom Government image
- Wikimedia Commons, File:CruiserMk2.jpg — Public-domain United Kingdom Government image
- Wikimedia Commons / Bundesarchiv, File:Bundesarchiv Bild 101I-163-0318-14A, Balkan, Griechenland, Beutefahrzeuge.jpg — CC BY-SA 3.0 Germany image
- Wikimedia Commons, File:Cruiser MkIIA CS 1 Bovington.jpg — CC BY 3.0 image by Hohum
- Wikimedia Commons, File:Cruiser Mk.IIA CS (T9261) (36586354616).jpg — CC BY-SA 2.0 image by Alan Wilson listed as an additional lead; documents preserved T9261 at Bovington in 2016
_(36586354616).jpg){kind=link}