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Medium Mark A Whippet
The Medium Mark A Whippet was a British tank of the First World War. It was intended to complement the slower British heavy tanks by using its relative mobility and speed in exploiting any break in the enemy lines. Whippets later took part in several of the British Army's postwar actions, notably in Ireland, North Russia and Manchuria.〔 name="Jackson, Robert 2007" p.22〕
==Development and production history==
The Whippet was first produced in 1917. On 3 October 1916 William Tritton, about to be knighted for developing the Mark I, proposed to the Tank Supply Department that a faster and cheaper tank, equipped with two engines like the Flying Elephant, should be built to exploit gaps that the heavier but slow tanks made,〔Chris Ellis and Peter Chamberlain (1972). ''Medium Tanks Marks A to D''. Profile Publications Ltd, Great Bookham, p. 2〕 an idea that up till then had been largely neglected.〔Chris Ellis and Peter Chamberlain (1972). ''Medium Tanks Marks A to D''. Profile Publications Ltd, Great Bookham, p. 1〕 This was accepted on 10 November and approved by the War Office on 25 November. At that time the name for the project was the ''Tritton Chaser''. Traditionally the name ''Whippet'' is attributed to Sir William himself.〔Chris Ellis and Peter Chamberlain (1972). ''Medium Tanks Marks A to D''. Profile Publications Ltd, Great Bookham, p. 3〕 Actual construction started on 21 December. The first prototype, with a revolving turret taken from an Austin armoured car — the first for a British tank design, as Little Willie's original turret was not yet revolving — was ready on 3 February 1917 and participated (probably without one) in the famous "tank trials day" at Oldbury on 3 March. The next day, in a meeting with the French to coordinate allied tank production, the Commander-in-Chief of the British forces Field Marshal Haig ordered the manufacture of two hundred vehicles, the first to be ready on 31 July. Although he was acting beyond his authority, as usual,〔Chris Ellis and Peter Chamberlain (1972). ''Medium Tanks Marks A to D''. Profile Publications Ltd, Great Bookham, p. 4〕 his decisions were confirmed in June 1917. The first production tanks left the factory in October and two were delivered to the first unit to use them, F Battalion of the Tank Corps〔as such these tanks received names starting with "F"〕 (later 6th Battalion), on 14 December 1917. In December 1917 the order was increased from 200 to 385 but this was later cancelled in favour of more advanced designs.〔Chris Ellis and Peter Chamberlain (1972). ''Medium Tanks Marks A to D''. Profile Publications Ltd, Great Bookham, p. 5〕
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