View source for Saint-Chamond (tank)

{{Short description|Heavy French tank of World War 1}}
{{infobox weapon
| is_vehicle         = yes
| name               = 
| image              = file:St. Chamond.jpg
| caption            = Early model Saint-Chamond
| type               = [[Heavy tank|Heavy Tank]]
| origin             = [[French Third Republic|France]]
| length             = 8.9&nbsp;m
| width              = 2.7&nbsp;m<ref>Bovington Tank Museum</ref>
| height             = 2.4&nbsp;m
| weight             = 23 tonnes
| suspension         = Coil spring
| speed              = {{cvt|12|km/h|mph}}
| primary_armament   = 1x [[Canon de 75 modèle 1897|75&nbsp;mm gun]] with 106 rounds.
| secondary_armament = Four 8&nbsp;mm [[Hotchkiss M1914 machine gun|Hotchkiss]] machine guns with 78 belts of 96 rounds.
| armour             = 11–19&nbsp;mm
| engine             = 4-cylinder [[Panhard|Panhard-Levassor]] (petrol)
| engine_power       = {{cvt|70|kW|hp}}, [[Crochat-Colardeau]] electric transmission
| pw_ratio           = {{cvt|4|hp/t|kW/t|order=flip}}
| crew               = 8 (commander-driver, gunner-loader, assistant gunner, four machine gunners, mechanic)
}}

The '''Saint-Chamond''' was the second French [[tank]] to enter service during the [[First World War]], with 400 manufactured from April 1917 to July 1918. Although not a tank by a strict definition of a heavily armoured turreted vehicle, it is generally accepted and described as such in accounts of [[Tanks of World War I|early tank development]]. It takes its name from the commune of [[Saint-Chamond, Loire|Saint-Chamond]] where its manufacturers [[Compagnie des forges et aciéries de la marine et d'Homécourt]] (FAMH) were based.

Born of the commercial rivalry existing with the makers of the [[Schneider CA1]] tank, the Saint-Chamond was an underpowered and fundamentally inadequate design. Its principal weakness was its Holt [[caterpillar tracks]]. They were much too short in relation to the vehicle's length and weight (23 tons). Later models attempted to rectify some of the tank's original flaws by installing wider and stronger track shoes, thicker frontal armour and the more effective [[Canon de 75 modèle 1897|75mm Mle 1897 field gun]].

Altogether 400 Saint-Chamond tanks were built, including 48 unarmed caisson tanks. The Saint-Chamond tanks remained engaged in various actions until October 1918, belatedly becoming more effective since combat had moved out of the trenches and onto open ground. Eventually, the Saint-Chamond tanks were scheduled to be entirely replaced by imported [[Mark V (tank)|British heavy tanks]].

==Development==
===The Schneider===
In January 1915, the French arms manufacturer [[Schneider-Creusot|Schneider]] sent out its chief designer, [[Eugène Brillié]], to investigate tracked tractors from the American [[Holt Company]], at that time participating in a test programme in [[England]]. The original French project was to provide mobility to mechanical wire-cutting machines of the [[Breton-Pretot machine|Breton-Pretot]] type. On his return Brillié, who had earlier been involved in designing armoured cars for [[Spain]], convinced the company management to initiate studies on the development of a ''Tracteur blindé et armé'' ("armoured and armed tractor"), based on the [[Baby Holt]] chassis, two of which were ordered.

Experiments on the Holt caterpillar tracks started in May 1915 at the Schneider plant with a {{cvt|75|hp|kW|order=flip}} wheel-steered model and the {{cvt|45|hp|kW|order=flip}} all-caterpillar Baby Holt, showing the superiority of the latter.<ref>Gougaud, p.102-111</ref> On 16 June, new experiments followed in front of the [[President of the French Republic]], and on 10 September for Commander Ferrus, an officer who had been involved in the study (and ultimate abandonment) of the [[Levavasseur project|Levavasseur tank project]] in 1908.<ref>Gougaud, p.215</ref>

In early 1916, the first prototype of the Schneider tank was assembled in an army workshop. It featured tracks from the American-made [[Holt tractor|Holt caterpillar tractors]] that were already used in France for towing heavy artillery. Private Pierre Lescure designed the fighting compartment. Lieutenant Fouché lengthened the tracks to improve trench-crossing ability. In this early form the prototype of the Schneider was called ''Tracteur A'' - not for security reasons, but because nobody knew exactly how to call such vehicles; the French word ''char'' was not yet applied to tanks. Eugène Brillié, the chief designer at Schneider, rejected this ''Tracteur A'' prototype. Instead he had invented a tail for his own tank's chassis thus providing the same trench crossing ability but for less overall weight and length.

===The Saint-Chamond===
While Brillié began to assemble this second prototype which was to become the [[Schneider CA1]], the arms manufacturer ''[[Forges et Aciéries de la Marine et d'Homécourt]]'' (aka "FAMH"), based at [[Saint-Chamond, Loire]], was given an order for 400 tanks by the French government, a political move prompted by General Mourret of the Army "Service Automobile". Saint-Chamond intended to build a tank that would be partly similar to the Schneider. Brillié refused to share his patents for free, and Saint-Chamond refused to pay. As a result, the "Forges et Acieries de la Marine et d'Homecourt" company, being unable to replicate certain patented details (notably the tail) of the new Schneider tank, developed its own proprietary design: the "''Char Saint-Chamond''". It included a "[[Crochat-Colardeau]]" gasoline-electric transmission, a traction system already used on [[railcar]]s in service with the French railways. Furthermore, the freedom to design a heavier and larger tracked vehicle gave Saint-Chamond the opportunity to upstage the Schneider company. It did this by installing on its "Char Saint-Chamond" a more powerful, full size 75&nbsp;mm field gun plus 4 Hotchkiss machine guns instead of the two machine guns present on the Schneider tank.
[[Image:Saint-Chamond.Saumur.0004fq2z.jpg|thumb|left|300px|The ''Char Saint-Chamond'' on display at the ''Musée des Blindés'' in Saumur, the last surviving example.]]

Saint-Chamond's technical director was Colonel Émile Rimailho, an artillery officer who had become dissatisfied over the insufficient reward he had received for helping design the famous [[Canon de 75 modele 1897]] field gun as well as the [[Rimailho Model 1904TR|Modele 1904 155&nbsp;mm "Rimailho" howitzer]]. Following his departure from the French State arsenal system (APX) and joining Saint-Chamond, Rimailho adapted a Mondragon designed 75&nbsp;mm field gun for production for the Mexican Army. It was the proprietary [[Saint Chamond-Mondragón|Canon de 75mm TR Saint-Chamond (Modele 1915)]], designed to fire the regular French 75&nbsp;mm ammunition. The French government had already made a commitment in May 1915 to purchase the Saint-Chamond 75mm gun.<ref>Pierre Touzin & François Vauvillers "Les Canons de la Victoire 1914-1918. Tome 1 L'Artillerie de Campagne" Histoire & Collections, Paris, 2009, p.47</ref> It is unclear whether the guns for the Saint-Chamond tanks were taken from existing stocks of Saint-Chamond guns or new production. Colonel Rimailho, who had a direct financial interest in selling his company's gun, induced the Ministry of War to specify that the new Saint-Chamond tank would also mount the Saint-Chamond made 75mm. In so doing Rimailho had also upstaged the Schneider CA1 tank which could only be fitted with a smaller Schneider-made fortress gun firing a 75&nbsp;mm reduced charge ammunition. To accommodate a regular length and full size 75&nbsp;mm field gun, a hull longer than on the Schneider tank was essential. The earliest Saint-Chamond prototype, a tracked vehicle longer and heavier than the Schneider tank was first demonstrated to the French military in April 1916.

When Colonel [[Jean Baptiste Eugène Estienne]], who had taken the initiative to create the French tank arm, learned that an order for 400 additional tanks had been passed on April 8, 1916, he was at first quite elated. When it later became apparent that they would be of a different type, Estienne was shocked and wrote:

{{blockquote|I am painfully surprised that an order has been launched of this importance without asking the opinion of the only officer who, at the time, had undertaken a profound study of the technical and military aspects involved and who had brought the supreme commander to the decision to take this path [towards a tank arm].<ref>Mathieu Detchessahar and Yannick Lemarchand, "Des Hommes et des Projects dans l'Urgence—La naissance du char d'assaut français, ''Annales des Mines'' p 47; quoting ''Lettre d'Estienne à Joffre, 1er novembre 1916. SHAT, 16 N 2121'': "Je suis péniblement surpris qu'on ait lancé une commande de cette importance sans prendre l'avis du seul officier qui, à l'époque, se soit livré à une étude approfondie de la question technique et militaire, et qui ait décidé le général en chef à marcherdans cette voie"</ref>}}

==Description==
[[Image:Char St Chamond tank.jpg|thumb|right|300px|The ''Char Saint-Chamond'' showing the overhanging front hull and the later M.1897 75&nbsp;mm field gun]]
As a result of Rimailho's manipulations, the new tank had become a rather cumbersome and underpowered vehicle. It lacked a rotating turret, instead using a large overhanging front compartment housing the long 75&nbsp;mm gun protruding from the nose. It should be pointed out that all French 75mm field guns at the time used the same method of traverse control. The whole gun carriage was moved from side to side pivoted on the end of the trail by a worm gear arrangement on the axle of the gun. This meant that the Saint-Chamond engineers had no option but to fit the whole gun into the fighting compartment.<ref>{{Cite book|url=https://gallica.bnf.fr/ark:/12148/bpt6k6552338w|title = Artillerie St-Chamond. Règlement de manoeuvre du matériel de campagne de 75 T.R. : 2e édition, comportant les modifications prescrites par les feuilles rectificatives N°s 1 et 2|year = 1917}}</ref>
[[File:Anonymes 14 - Interieur d'un char d'assaut Saint-Chamond - 1918 - Plaque de verre stéreo positive 6X13 (8520552451).jpg|thumb|left|Interior of the Saint-Chamond tank equipped with the Mle 1897 gun.]]
Within the forward fighting compartment and on the left was the driver, also the vehicle commander. On the right a machine gunner operated the front Hotchkiss machine gun. This machine gunner was also responsible for the breech operation of the 75&nbsp;mm gun which he had to perform after pivoting on his seat to the left. A loader (referred to in some sources as the gunner) adjusted the gun's elevation, observing the target through a small hatch in the front of the tank, which left him vulnerable to enemy fire. Traversing the 75&nbsp;mm gun beyond the limits of traverse of the gun (6° for Mle 1897) required traversing the whole tank, and this was performed by the driver. A second fighting compartment at the back held one machine gunner next to the secondary driver's position, where the tank could also be driven backwards by the mechanic in an emergency. Between those two compartments stood in the open the gasoline engine and the electric generator. Narrow passageways on both sides of the engine connected the front and rear compartments. The passageways also held Hotchkiss positions, one on each side in front of the engine. Altogether, the Saint-Chamond had four [[Hotchkiss M1914]] machine gun positions: one in the front, one in the back and one on each side of the tank.

Despite weighing 23 tons, the tank could manage a top speed of {{convert|12|km/h|mi/h}}. This speed was seldom achieved in the field as the long nose was prone to digging into the ground. The relatively high maximum speed on flat ground was made possible by the "Crochat Colardeau" transmission which coupled a [[Panhard-Levassor]] four-cylinder {{cvt|90|hp|kW|order=flip}} sleeve-valve gasoline engine to an electric generator capable of giving an output of 260 amperes under 200 volts. The generator was connected to two separate electric motors, one for each track, thus permitting perfect gradual steering of the tank.

Due to its short tracks and over-extended body, the vehicle experienced major difficulties in crossing trenches and overcoming obstacles. This led to such negative reactions by the crews in training that a special mention was passed on to General Headquarters:

{{blockquote|Nobody wants to serve on the Saint-Chamond. Second Lieutenant de Gouyon, principal Saint-Chamond driving instructor at Marly, has publicly declared that it has become virtually impossible for him to continue to carry on and, since he is a Member of Parliament, that he will request to have the whole matter placed on the next parliamentary agenda.<ref>Mathieu Detchessahar and Yannick Lemarchand, "Des Hommes et des Projects dans l'Urgence—La naissance du char d'assaut français, ''Annales des Mines'' p. 47; quoting ''Note résumant la question du matériel d'artillerie d'assaut, G.Q.G., 28 novembre 1916. SHAT, 16 N 2121''</ref>}}

==Improved Saint-Chamond tanks (1918)==
Originally the crew of nine men was protected by 11&nbsp;mm of steel armour on the sloping front and 17&nbsp;mm on the sides. Later on, the addition of an extra layer of spaced 8.5&nbsp;mm armour on the front improved protection. Beginning with the 151st vehicle, the roof was also redesigned with a double slope so that satchel charges and grenades would slide off. Concurrently, the original two observation turrets in front and on top were done away with and replaced by a single low profile square turret permitting front and sides vision by the tank's driver/commander. With time, the tracks were also widened in two steps from 324&nbsp;mm to 412&nbsp;mm to lower their ground pressure. After Saint-Chamond tank No 210 the more effective [[Canon de 75 modèle 1897|Model 1897 field gun]] was installed instead of Rimailho's (profitable) 75&nbsp;mm Saint-Chamond gun. At about the same time barrel-like rollers were added underneath the front and rear of the tank to help crossing trenches. This improved version was later called, unofficially, the ''Modèle 18''. Production slowed down in March 1918, after at least 377 had been assembled, and ceased completely in July 1918.

Initially, forty eight Saint-Chamond tanks were modified as supply and recovery vehicles that could tow the lighter Schneider tanks. Their first action as a fighting vehicle took place at Laffaux Mill on May 5, 1917.{{sfn|Zaloga|2010|p=18}} Sixteen Saint-Chamond tanks were engaged there, several of them getting stuck in trenches, but only three were destroyed in combat. During the rest of the war, twelve groups in total were formed with Saint-Chamond tanks : ''Artillerie Spéciale'' Nos. 31–42. In mid-1918, since combat had left the trenches for the open fields, it was used to engage German field gun batteries (''Nahkampfbatterien'') at a distance with its 75&nbsp;mm cannon. The Saint-Chamond proved at last quite effective in this specialist [[assault gun]] role. The Saint-Chamond's final engagement in battle, with initially 16 tanks, took place in early October 1918, in support of the U.S. First Division near [[Montfaucon-d'Argonne|Montfaucon]]. As reported in Ralph Jones et al. (1933) in reference to this last engagement : "The Saint Chamond tanks were handicapped by damage to their tracks, by derailments, by the breakage of the caps of connecting rods on forward bogies and of track pins". By that time, the [[Renault FT]] tank had taken over the major role in the French tank force and had also been purchased by the American Expeditionary Forces in France.

After the war 54 were rebuilt as ammunition carriers; the remainder were largely scrapped. However, at least one Saint-Chamond was retained as a memorial: there was one at the École des Chars at Versailles from 1919 to 1940 when the Germans presumably scrapped it along with the other tanks on display.<ref>{{Cite web|url=https://forum.pages14-18.com/viewtopic.php?f=34&t=52719&start=0|title=Artillerie Spéciale - Schneider et St Chamond de l'école de Versailles - Forum PAGES 14-18}}</ref> There are unsubstantiated stories about Poland using the tank against the Red Army in 1920. If true, these specimens were in all probability not from the Soviet Army as the latter never had been supplied with them and the French Expeditionary Forces to Russia were only equipped with the Renault FT.{{Citation needed|date=January 2023}}

==Surviving example==
[[File:Saint Chamond ‘62770’ “Fleur D’ Amour” (45320726511).jpg|thumb|Last Saint-Chamond surviving taking part in ''TankFest 2017'' in [[Bovington Camp]], Dorset, UK.]]
The last Saint-Chamond tank remaining in existence, an improved mid-1918 model, alongside other French tanks of World War I (Schneider CA1 and Renault FT), is preserved at the [[Musée des Blindés]] at [[Saumur]]. It had survived, together with a Schneider CA1 tank of the same vintage, at the Aberdeen Proving Grounds Ordnance Museum in Maryland, US, and was donated by the U.S. to the French government in 1987. Between 2015 and 2017 it was restored to running condition and repainted in a World War I camouflage scheme, at a cost of €120,000. It took part in various displays throughout 2017 to mark the centenary of the first use of tanks by the French army.<ref>http://www.museedesblindes.fr/images/article-CO-14-janvier-2017.jpg {{Bare URL image|date=March 2022}}</ref>

A full-size replica in [[Polystyrene#Extruded polystyrene foam|polystyrene foam]], built by students of the Lycée Le Corbusier at [[Tourcoing]], is on display outdoors at the ''[[Museum of the Great War|Historial de la Grande Guerre]]'' museum in [[Péronne, Somme|Péronne]], France.
[[Image:St._Chamond_-_Historial_de_la_Grand_Guerre,_Peronne_(1).jpg|thumb|left|The ''Char Saint-Chamond'' replica on display at the ''Historial de la Grande Guerre'']]

==In Media==
* The 2022 film [[All Quiet on the Western Front (2022 film)|All Quiet on the Western Front]] shows several Saint-Chamond tanks attacking a German trenchline. The film used [[Practical effect|practical replicas]] based on a [[BMP-1]] chassis. This is especially obvious since the tracks are visibly different from the period-correct Saint-Chamond.
* 2016: The Saint-Chamond tank is featured and playable in a Battlefield 1 by DICE studios and EA games under the abbreviation "St-Chamond".
{{clear}}

==Notes==
{{notelist}}

{{reflist}}

==References==
* {{cite book |first=Steven J. |last=Zaloga |title=French Tanks of World War I |date=2010 |series=New Vanguard 173 |publisher= Osprey Publishing |isbn=978-1-84603-513-5}}.
* Lieutenant-colonel P.Malmassari, "Les chars de la Grande Guerre", 2009, 14–18. ''Le Magazine de la Grande Guerre''. {{ISSN|1627-6612}}.
* Ralph E. Jones et al., ''The Fighting Tanks from 1916 to 1933'', first published in 1933 and re-issued in 1969 by We, Inc. Publishers.
* Alain Gougaud, "L'Aube de la gloire; Les automitrailleuses et les chars français pendant la Grande Guerre", 1987, OCEBUR (Guides Muller). {{ISBN|2-904255-02-8}}.
* Francois Vauvillier, ''French Tanks and Armoured Vehicles 1914–1940'', 2014, Histoire et Collections-Paris, {{ISBN|978-2-35250-322-4}}.

==External links==
{{commons|St Chamond tank}}
* [https://archive.today/20130413165248/http://www.chars-francais.net/new/index.php?option=com_content&task=view&id=61 Chars-francais.net] {{in lang|fr}}
* [https://web.archive.org/web/20110721014240/http://www.museedesblindes.fr/spip.php?article12 Saumur Tank Museum]
* [http://www.peachmountain.com/5star/Museum_Tanks_Musee_des_Blindes_St-Chamond_Tank.asp St. Chamond tank @ 5 Star General site]
* Video of [https://www.facebook.com/musee.desblindes/posts/1783316171920814 newly restored (2017) Saint-Chamond test drive] at Saumur armoured vehicle museum.

{{WWI tanks|style=wide}}
{{WWI French AFVs}}

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[[Category:World War I tanks of France]]
[[Category:World War I tanks]]
[[Category:Heavy tanks]]
[[Category:History of the tank]]
[[Category:Forges et Aciéries de la Marine et d'Homécourt]]