The Medium Mark C Hornet was a British
medium tank
A medium tank is a classification of tanks, particularly prevalent during World War II, which represented a compromise between the mobility oriented light tanks and the armour and armament oriented heavy tanks. A medium tank's classification ...
developed during the
First World War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, but produced too late to see any fighting.
Development
In 1917 Sir William Tritton had developed the
Medium Mark A Whippet without involving his former co-worker
Walter Gordon Wilson. In response Major Wilson began to design an improved type on his own, the
Medium Mark B, in July 1917. As soon as he became aware of Wilson's intentions, Tritton ordered his chief designer, William Rigby, to design a rival type: the Medium Mark C. The drawings were approved by the
British Army
The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
on 19 April 1918. The prototype was finished in August, a few weeks before the Medium B prototype also in construction at Tritton's own factory. At first 200 tanks were ordered; later this was increased to 600, all to be produced by
William Foster & Co Ltd at
Lincoln with Armlet & Wortley as subcontractor. Only 50 were built. The colloquial name of the tank was to be "Hornet", but it seems nobody ever used it.
Description

Superficially, the Medium C looks a lot like its rival, the
Medium B.
It too has the general rhomboid shape of the
Mark I and later heavy tanks combined with a fixed armoured structure, or
casemate
A casemate is a fortified gun emplacement or armoured structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary
When referring to antiquity, the term "casemate wall" ...
, well forward,
[Crow, Duncan. ''British and Commonwealth Armoured Formations 1919-46'' (Profile Publications Ltd, Great Bookham, no date), p.2.] fitted with ball-mounts for five machine guns. However, Tritton's Medium Mark C was a much longer vehicle. It had a separate engine compartment at the back like the Medium B, but here it was large enough to house a normal 6-cylinder
Ricardo engine behind a standard (as used in
Mark V heavy tank) epicyclic transmission which was connected by chains to the sprockets. Also it was easily accessible from the fighting compartment. The larger engine meant the tank had better speed - about . The greater length gave it a superior trench crossing ability. A fuel tank holding of petrol allowed for a range of . Overall mobility therefore was much better.
Rigby had taken great care to improve the design's
ergonomics
Ergonomics, also known as human factors or human factors engineering (HFE), is the application of Psychology, psychological and Physiology, physiological principles to the engineering and design of products, processes, and systems. Primary goa ...
. The commander had a special revolving lookout cupola and even a small
map table. There were eleven vision slits. Special stowage boxes were fitted for the personal gear of the crew of four. Speaking-tubes were used to improve communication. The driver had an
odometer
An odometer or odograph is an instrument used for measuring the distance traveled by a vehicle, such as a bicycle or car. The device may be electronic, mechanical, or a combination of the two (electromechanical). The noun derives from ancient Gr ...
.
Operational history

In the (likely) eventuality that the
Medium Mark D would not be ready for mass production in 1919, the
Tank Corps hoped to receive no fewer than 6,000 Medium Cs that year, a third of which would be of the "Male" version, with a
long six-pounder (57 mm) gun, as used on the
first British tanks, in the front of the superstructure. Though drawings were prepared, nothing would come of this.
When the war ended all orders were cancelled, with only 36 vehicles nearly finished. These were completed, together with fourteen others built from pre-produced parts, for a total production of fifty. General
J.F.C. Fuller considered switching the budget for the development of the Medium D to a further production of Medium C's so as to fully equip all peace-time tank battalions with this better tank, but decided against it. Only the
2nd Tank Battalion received the tank. As it was the most modern
materiel
Materiel or matériel (; ) is supplies, equipment, and weapons in military supply-chain management, and typically supplies and equipment in a commerce, commercial supply chain management, supply chain context.
Military
In a military context, ...
of the Tank Corps, it was carefully kept from harm: no Medium C's were sent either with the
Expedition Forces against the Bolsheviks in Russia or to the
Anglo-Irish War
The Irish War of Independence (), also known as the Anglo-Irish War, was a guerrilla war fought in Ireland from 1919 to 1921 between the Irish Republican Army (IRA, the army of the Irish Republic) and British forces: the British Army, along wi ...
. The only tanks participating in the 1919 victory parade were four Medium C's. The only "action" the tank ever saw was being deployed to
Glasgow
Glasgow is the Cities of Scotland, most populous city in Scotland, located on the banks of the River Clyde in Strathclyde, west central Scotland. It is the List of cities in the United Kingdom, third-most-populous city in the United Kingdom ...
in 1919, where they were parked in the Cattle Market, unused, in case they were needed to control rioting in the city, following the rioting known as the ''
Battle of George Square'' in 1919.
From 1925 on, the Medium C was gradually replaced by the
Medium Mark I and
Medium Mark II. Proposals to use Medium Cs as recovery vehicles were rejected. A single vehicle was used to test a new type of transmission. In 1940 the last remaining Medium C was melted down.
Notes
Notes
References
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External links
Great Britain's medium tanks
{{Use dmy dates, date=June 2017
World War I tanks
Medium tanks of the United Kingdom
World War I tanks of the United Kingdom