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Tank, Cruiser, Mk II (A10)
Tank, Cruiser, Mk IIA (A10)
Place of origin	United Kingdom
Specifications
Weight	14.3 tonnes
Length	18 ft 4 in (5.5 m)
Width	8 ft 4 in (2.6 m)
Height	8 ft 8 in (2.5 m)
Crew	5 (Commander, loader, gunner, driver, Hull MG gunner)
Armour	6 - 30 mm
Primary armament	OQF 2pdr 100 rounds
Secondary armament	two Vickers/BESA Machine guns 4,050 rounds
Engine	AEC Type A179 6-Cylinder Petrol 150 hp
Suspension	triple wheel bogie with coil spring
Operational range	100 miles (road)
Speed	16 mph (road) 8 mph (off-road)

The Tank, Cruiser, Mk II (A10), was developed alongside the A9, and was intended to be a heavier, infantry tank version of that type. In practice it was not deemed suitable for the infantry tank role and was classified as a "heavy cruiser". Use of the A10 was confined to Britain.

Contents 1 History and specifications 2 Combat history 3 Variants 3.1 Tank, Cruiser, Mk II (A10 Mk I) 3.2 Tank, Cruiser, Mk IIA (A10 Mk IA) 3.3 Tank, Cruiser, Mk IIA CS (A10 Mk IA CS) 3.4 Other vehicles based on chassis 4 External links 5 See also 6 External links

The A10 was developed by Sir John Carden of Vickers in 1934 by adaptation of the A9 design. The two sub-turrets present on the A9 were removed, and extra armour bolted onto that already present on the front and sides of the hull, along with all faces of the turret, providing approximately twice the armor in most areas.

There was no separation between the driver's compartment and the fighting compartments. The turret armament consisted of a QF 2-pounder (40mm) gun and a coaxial Vickers machine gun. There was a BESA machine gun mounted in the hull in a barbette to the right of the driver. This was added to give extra firepower but at the expense of simplicity - the Vicker and the BESA using different ammunition. The tank had a total crew of 5 (Commander, gunner, loader, driver and hull machine gunner).

It used the same suspension and engine as the A9 and as a result it was slower than the A9. The A10 entered service in December 1939, but was something of an oddity - it had been intended to sacrifice speed for armour like an Infantry tank, but was still relatively poorly armoured, and was, as a result, not effective. Production was ordered in July 1938, Total production was 175 vehicles including the 30 CS versions (see below), 45 were built by Birmingham Railway Carriage and Wagon Company, 45 by Metropolitan-Cammell, 10 by Vickers. In late 1939 another order was placed with Birmingham Railway Carriage and Wagon Company, this time it was a larger order of 75 vehicles.

A number of Mark IIs were part of the British Expeditionary Force (BEF) sent to France in the early stages of World War II. Their cross country performance was recorded as poor but they were still used later in North Africa at the defence of Tobruk in 1941 where reliability and suspension performance in the desert conditions was praised. However 60 odd worn out examples were taken to Greece, by the 3rd RTR and although performing well against the German tanks, over 90% were lost due to mechanical breakdowns as opposed to enemy action (mainly tracks)

Classified as a 'heavy cruiser' and 31 were sent to France with the 1st Armoured Division, but performed poorly in the following campaign. Also served in the North African Campaign until late in 1941.

The coaxial Vickers machine guns were replaced with BESA machine guns. Armoured radio housing added.

Had a 3.7" (94 mm) howitzer in the turret instead of the 2 pdr. The standard ammunition load was 40 rounds smoke, and a few HE shells.

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