Crusader A15 cruiser tank Mk I - 2pdr and 3inch CS versions - case report

Lads!!!

      Today we are going to meet two machines that knew a lot of action in the deserts of North Africa. Here are the cruiser tanks Crusader Mk I with 2 pdr gun and the Close Support version, the Crusader MkI CS armed with 3 inch howitzer. Let's see this double building...

 Crusader Mark I - A15 cruiser tank Mk VI

Crusader Mk I CS -  A15 cruiser tank Mk VI

History:       

       The Tank, Cruiser, Mk VI or A15 Crusader was one of the primary British cruiser tanks of the early part Second World War and perhaps the most important British tank of the North African Campaign. The Crusader's mobility made it a favourite of British tank crews and its Ordnance QF 6 pounder main gun made it more than a match for the early Panzer III and Panzer IV tanks it faced in combat. By late 1942, the limited diameter of its turret ring prevented further armament upgrades and this, combined with the presence of Tiger I Tanks among the Afrika Korps and overheating problems caused by the high temperatures of the desert, led to the design being phased out in favour of the new US built Sherman III medium tank and the British Cromwell heavy cruiser.

       In 1938, Nuffield Mechanization & Aero Limited produced their A16 design for a heavy cruiser tank based on Christie suspension. Looking for a lighter and cheaper tank to build, the General Staff requested alternatives. To this end the A13 Mk III cruiser tank design which would enter service as the "Tank, Cruiser Mk V" and known in service as "Covenanter" was designed.

A13 Cruiser tank Mk V - Covenanter

     Nuffield were, in 1939, offered the opportunity to take part in the production of Covenanter. Nuffield, however, preferred to work on its own version of the A13—though they still provided design work for the Covenanter's turret. This new tank was adopted as "Tank, Cruiser, Mk VI Crusader", under General Staff specification A15. Although Crusader is often referred to as an improved version of the Covenanter, in fact it was a parallel design.

       Both tanks were ordered "off the drawing board" without building prototypes first. Despite a later start, the pilot model of the Crusader was ready six weeks before the first Covenanter.

      Unlike earlier "Christie cruisers"( A13, Marks III and IV and the Mark V Covenanter ) that were built with 4 road wheels, Crusader had five road wheels each side to improve weight distribution in a tank that weighed almost 20 tons instead of the 14 tons of the previous cruisers. The 810 mm diameter wheels were of pressed steel with solid rubber tyres. The hull sides were built up of two separated plates with the suspension arms between them.

       It had a different engine from the Covenanter, different steering system and a conventional cooling system with radiators in the engine compartment. At the left hand side of the front hull—a place occupied by the engine radiator in the Covenanter—was mounted a small hand-traversed auxiliary turret armed with a Besa machine gun. The auxiliary turret was awkward to use and was often removed in the field or remained unoccupied.

       Both the A13 Mk III and the A15 designs used the same main turret. The turret was polygonal—with sides that sloped out then in again—to give maximum turret space on the limited turret diameter. Early production vehicles had a "semi-internal" cast gun mantlet, which was quickly replaced in production by a better protected big cast mantlet with three vertical slits - for the main gun, for a coaxial Besa machine gun and for the sighting telescope.

       There was no cupola for the commander who had instead a flat hatch with the periscope mounted through it.

Crusader Mk I 2pdr gun turret

       The main armament, as in other British tanks of the period, was balanced so the gunner could control its elevation through a padded shaft against his right shoulder rather than using a geared mechanism. This fitted well with the British doctrine of firing accurately on the move.

       When it was understood that there would be delays in the introduction of successor heavy cruiser tanks - what would become the Cavalier, Centaur and Cromwell - the Crusader was adapted to use the 6 pounder gun.

Service History:

North Africa

       With the Axis forces in North Africa having pushed the British back to the Egyptian border and the remaining British armour being a mixed force of older tanks with a few Matildas, tanks werehurriedly shipped via the Mediterranean arriving on 12 May 1941. There were sufficient Crusaders to equip the 6th Royal Tank Regiment which with the 2nd RTR (with older cruiser tanks) formed the 7th Armoured Brigade. The rest of the tanks were Matildas for the 4th Armoured Brigade giving the 7th Armoured division only four tank regiments.

       Although there was pressure from London for the reconstituted Desert Rats to go into action, outfitting for the desert and training delayed their first use until Operation Battleaxe, an attempt to relieve the siege of Tobruk in June. As the brigade swept round the flank, the Crusaders were caught by concealed anti-tank guns and lost 11 tanks. The 6th RTR lost more tanks, to action and defects, in the fighting withdrawal of the next two days.

       The 7th Brigade was re-equipped with further Crusaders, but as the brigade had been expanded by the addition of 7th Hussars there were not sufficient to replace the older cruiser tanks.

       The 22nd Armoured Brigade, effectively an advance force of the 1st Armoured Division, which was three inexperienced Yeomanry units equipped with Crusaders transferred to North Africa to bring the 7th Armoured up to three-brigade strength. The 8th Hussars was added to the 4th Armoured Brigade but these had to be equipped with M3 Stuart light tanks as there were still insufficient cruisers. The 22nd was able to take part in Operation Crusader of November 1941 which was named after it.

       In Operation Crusader the two British Corps were disposed such that they could not support each other, but it was expected that as the British outnumbered the German and Italian forces in tanks, the tank against tank battles would be decided in their favour. However in the resulting encounters, Rommel did not put his tanks en masse into action against the British ones and the large numbers of German anti-tank guns working offensively with the tanks and infantry proved effective. The Germans had a few 88 mm guns but were mostly equipped with the Pak 38, a long-barreled 50 mm gun, with a range of 1,000 yards. This superiority in quality and tactical deployment of AT guns was to be a feature of the Afrika Korps throughout the Desert War. The Crusader's 2 pdr (40 mm) gun was as effective as the short-barreled 50 mm of the Panzer III although it was outranged by the short-barreled 75 mm of the Panzer IV.

       Although the Crusader was faster than any tanks it opposed, its potential was limited by a relatively light QF 2-pounder gun, thin armour and mechanical problems. A particular tactical limitation was the lack of a high explosive shell for the main armament—these existed but were never supplied. Axis tank forces developed an extremely effective method of dealing with attacking tank forces by retiring behind a screen of concealed anti-tank guns. The pursuing tanks could then be engaged by the artillery. With the German anti-tank guns out of range of the tanks' machine guns and without a high explosive shell to return fire, the tanks were left with the equally unpalatable options of withdrawing under fire or trying to overrun the gun screen.

       The Crusader proved prone to catch fire when hit, a problem that was identified as due to the ammunition being ignited by hot metal penetrating the unprotected racks. The angled underside of the turret created "shell pockets" that acted as a lever for lifting the turret from its mounting when struck by a shell.

Crusaders Mk I in action - Africa - notice the differents sandshields

       The Crusader proved unreliable in the desert due to a number of issues. These started with their transport from the UK to North Africa. Poor preparation and handling caused problems that had to be rectified before they could be passed to the regiments, and ate into the supply of spare parts. Once in use the sand caused erosion in the cooling system and the stresses of hard cross-country travel caused oil leaks in the engine blocks. Since there were few tank transporters or railways in the desert, the tanks had to travel long distances on their tracks causing further wear.

       By the end of 1941, there was only one brigade, the 2nd, which was operating only Crusaders. In March 1942, US-built Grant medium tanks arrived: these replaced one in three Crusader squadrons. While the inclusion of the Grant with its effective 75 mm gun gave better firepower against anti-tank guns and infantry they were slower, limiting the Crusaders when they had to operate together. From May 1942, the Mark III were delivered. Of the 840 tanks available to the British, 260 were Crusaders. The German tanks they were facing were improved types with improved frontal armour which caused the Crusaders' 2-pounder shot to shatter rather than penetrate.

        As part of British deception operations, Crusaders could be issued with "Sunshade" which was a metal framework with canvas covering that disguised the tank as a lorry to German aerial reconnaissance. Similarly dummy tanks were deployed.

       Later in the campaign shipping was improved, Nuffields had put a engineering team in Egypt, and crews were better at preventing problems, but the reputation of the Crusader could not recover.

       After Montgomery took over command, the imbalance between British armour and German was redressed by better control and the addition of more American-supplied Grant and Sherman tanks. The Crusader was replaced in the main line of battle and used for "light squadrons" trying to flank the enemy when it engaged the heavier units. The Australian 9th Infantry Division operated Crusaders for reconnaissance and liaison.

       The British 1st Army landed as part of the Allied operations in Tunisia; some of its units were using the Crusader and these saw action from 24 November. These were not solely Crusader regiments but mixed Crusader and Valentine tanks; within each squadron two troops were Crusader IIIs and there were Crusader II CS attached to the Squadron HQ. These units of the 26th Armoured Brigade were used as an independent armoured column, "Blade Force", with the 78th Infantry Division. The operations of Blade Force were on terrain different from the desert of the earlier campaigns and the fighting took place with smaller numbers of vehicles. These actions were similar to what would be seen later in Europe.

       The 1st Army converted to Shermans during Tunisia, but Crusaders remained in use with the 8th for longer. The last major action for Crusaders was the Battle of Mareth. The North Africa campaign finished shortly after.

Other use:

       After the completion of the North African Campaign, the availability of better tanks such as the Sherman and Cromwell relegated the Crusader to secondary duties such as anti-aircraft mounts or gun tractors. In these roles it served for the remainder of the war.

       The Crusader, along with the Covenanter, equipped regiments at home particularly those of the 11th Armoured Division.

      A Crusader bulldozer was developed but not used operationally. One of these bulldozer tanks was converted for removing munitions following a fire at Royal Ordnance Factory Kirkby.

       The Crusader anti-aircraft guns were designed for use in North West Europe. However with the Allied domination of the air they were largely unneeded and the AA troops were disbanded. The Crusader gun tractors operated with the Armoured Divisions, but were supplanted in part by the 17 pdr Archer self-propelled gun.

Variants:

- Crusader I (Cruiser Mk VI): Original production version. The auxiliary turret was often removed in the field, eliminating the    hull machine gunner position.

Crusader Mk I

- Crusader I CS (Cruiser Mk VI CS): (Close Support) mounted a 3 inch howitzer in the turret instead of the 2-pounder.

Crusader Mk I CS

- Crusader II (Cruiser Mk VIA): The Crusader II had increased armour on hull front and turret front. As with the Mk I, the auxiliary turret was often removed.

Crusader Mk II

- Crusader II CS (Cruiser Mk VIA CS):  Mounted a 3-inch howitzer in the turret.

Crusader Mk II CS

- Command tank: Version existed with dummy gun and two No. 19 radios.

- Crusader III: Due to delays with the Cruiser Mark VII Cavalier and the need for cruiser tanks, the Crusader was up-gunned with the 6-pounder (43 and 50 caliber), the first British tank to mount this gun. Design work for a new turret started in March 1941 but Nuffield was not involved until late in the year when they adapted the existing turret with a new mantlet and hatch. The turret also received an extractor fan to clear fumes from the firing of the gun. The larger gun restricted turret space so the crew was reduced to three, with the commander acting also as gun loader—the loader was already the wireless operator. The auxiliary turret space was given over to ammunition stowage. The Crusader III first saw action, with about 100 participating at the Second Battle of El Alamein in October 1942.

Crusader Mk III with 6pdr Mk 5 - L/50 gun from Independent Czech Armour Brigade
Parade in Harwich - England Spring 43.

- Observation post: This was a tank converted to a mobile armoured observation post for   direction of artillery. The turret was fixed in place, the gun was removed and a dummy barrel fitted to give it the same outward appearance of a regular tank. With no requirement for ammunition the interior was given over to the radios, two No. 19 radios and No. 18 radio, map boards and related equipment. The Royal Artillery could then operate the OP tank up front among the fighting units directing artillery fire in their support.

- Crusader III, AA Mk I: The 6-pounder was replaced with a Bofors 40 mm anti-aircraft gun with an autoloader and powered mounting in an open-topped turret. The crew numbered four: gun commander, gun layer, loader, and driver. Also, there was a version without a turret, with the gun exposed, who fought in Normandy on Juno Beach.

Crusader AA Mk I  - Juno beach, 1944

Crusader AA Mk I

- Crusader III, AA Mk II / Mk III: A Crusader armed with twin Oerlikon 20 mm guns for anti-aircraft use. Mk III only differed from the Mk II by the position of the radio, which was moved to the hull in order to free some space inside the turret. A variation with triple Oerlikons that was produced in very limited quantities. Due to Allied air superiority none of the AA versions saw much action.

Crusader AA Mk II

- Crusader II, Gun Tractor Mk I: The Crusader gun tractor came out of a need for a vehicle to tow the heavy QF 17 pounder anti-tank gun. It was a Crusader tank hull with a simple boxy superstructure replacing that of the gun tank. The 14 mm thick structure protected the driver and the gun crew of six. The tractor also carried ammunition on the rear and within the crew area. Although nearly as heavy as the gun tank it was still capable of high speed and was limited to 27 mph. This was still hard on the QF 17 pounder guns. They were used in northwest Europe from the Normandy landings of 1944 to the end of the war in 1945. Some were used by battery commanders as armoured command and reconnaissance vehicles.

(font: http://en.wikipedia.org/wiki/Crusader_tank)

Crusader gun tractor - WWII era draw

Crusader gun tractor with wading gear

- Crusader ARV Mk I: Armored recovery vehicle based on turretless Crusader hull.

Crusader ARV

- Crusader dozer: A dozer blade on turretless Crusader hull.

Crusader dozer

      Between Nov 1940 and 1945, 5,464 Crusader tanks were built. Production of models of Crusader tanks, broken down by year, was as follows:

Crusader production

Specs:

Crusader A15 cruiser tank
Type	Cruiser tank
Place of origin	United Kingdom
Service history
In service	1941–1945
Wars	Second World War
Production history
Designer	Nuffield
Designed	1939/1940
Manufacturer	Nuffield Mechanizations and Aero Ltd
Produced	1940–1943
No. built	5,464
Specifications
Weight	19.1 to 20.0 t
Length	5.97 m
Width	2.77 m
Height	2.24 m
Crew	Mk III: 3 (Commander, gunner, driver) Mk I, II: 4 or 5 (+ Loader, hull gunner)
Armour	Mk I: 40 mm Mk II: 49, III: 51mm
Main armament	Mk I, II: QF 2 pdr (40 mm) 110 rounds Mk III: QF 6 pdr (57 mm) 65 rounds
Secondary armament	1 or 2 × Besa machine gun 4,950 rounds
Engine	Nuffield Liberty Mark II, III, or IV 27-litre V-12 petrol engine 340 bhp (254 kW) at 1,500 rpm
Power/weight	17 hp (12.7 kW) / tonne
Transmission	Nuffield constant mesh 4-speed-and-reverse
Suspension	Christie helical spring
Ground clearance	0.41 m
Fuel capacity	500 liters in 3 fuel tanks (+136 l auxiliary)
Operational range	322 km on roads 235 kmcross country
Speed	42 km/h (road) 24 km/h (off-road)
Steering system	Wilson epicyclic steering

The kits:

       The kits are Italeri, from the ancient era of model kits. The kits are good and honest, but present some strange errors, in special, the step in the front fender.

       I have two kits of the Mk I: one whole "boosted" with Friuls metal tracks,  PE Eduard ant etc. The other, standard. I ´ll build  them both in parallel, to see how they will be...

The two kits Mks I - and aftermarkets

Crusader Mk I "boosted" with metals...

      Gentleman, start your engines !!!!
       The build starts by the book; suspensions first...

Hulls and suspensions

Suspension growing...

The armour plates of suspensions in position

Upper hull in place...

With wheels...

Surgery in the front fenders - cutting the wrong step...

Scratch and metal version of front fenders...

   Hi, Gents...Today was the day of some mathematical conversions. I had the metal barrel (RB Models) for the 2pdr gun version., but did not have the tube or the specifications of the howitzer.

     The 2pdr gun was the Ordnance QF 2-pounder 40mm / L52. Or better, a gun with 40mm in diameter with 52 calibers in length. Translating: 40x52=2080mm. This is the actual length of the weapon (scale 1/1). If you divide this total (2080mm) by 35, you will have the length of the gun on the scale 1/35, or:  2080÷35=59,4mm. This is the total length of the gun in the 1/35 scale.

     About howitzer, I researched it and discovered that the gun was the Ordnance QF 3 inch (76,2mm) howitzer, with 25 caliber.

       Using the same formula, we have: 76,2x25=1905mm; 1905÷35=54,4mm. This is the total length of the howitzer in the 1/35 scale. About the internal diameter: 76,2÷35=2,1mm. To scratch this howitzer in 1/35 scale, I used a Plastruct tube with 2,1mm internal diameter and 3,2 external diameter. I have not bothered with the diameters of the 2pdr gun because I trust in  RB Models ...Uff...

        Let´s check!!

The lenght of the 2pdr gun - The metal gun is RB Models

Scratching the howitzer

The guns ready!!!

Upgrade in the coaxial MGs - RB Models, again

The main armament complete...

...and installed in the turrets!

 A few more advances...

Using MG from RB Models to substitute the Besas in plastic

The girls continues growing...Hull MG turrets

MG turrets . In close.

...and rear deck (air filters and gas tanks)

 Finally, I finished the build of Crusaders.

Crusader Mk I - ready for paint...

        Primmer time:

The two Crusaders in primmer...

       I decided to paint the two in light stone

Crusaders in light-stone with tonal variations...

       I applied a coat of gloss varnish before the decals to prevent the infamous "silvering". In this Saturday, I put the decals in the british girls...

Decals with Microsol...

1st and 7th British Armoured Division

Crusader Mk I with 2pdr. gun - 1st British Armoured Division

Crusader Mk I CS with 3inch. how. - 7th British Armoured Division

        Next step, weathering...

Crusader Mk I CS - notice the aging of the painting

Crusader Mk I 2 pdr. - with armoured wheels and tracks...

Crusaders almost ready...

      I managed to finish the two british girls. First, the Cruiser A15 tank Crusader Mk I with 2pdr gun, with 1st British Armoured Division markings...

British Cruiser A15 tank Crusader Mk I - 2pdr gun

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - left side view

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - left rear view

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - right rear view

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - right side view

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - right front view

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - left front view

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - main turret in reverse

British Cruiser A15 tank Crusader Mk I - 2pdr gun  - Kojak in size proportion

          And the British Cruiser A15 tank Crusader Mk I CS with 3inch how., from 7th British Armoured Division (Desert Rats):

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - 7th AD

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - front left view

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - front right view 

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - right side view 

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - rear right view 

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - rear left view 

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - left side view 

British Cruiser A15 tank Crusader Mk I CS - 3inch. howitzer - with Kojak

British Cruisers A15 tanks Crusaders Mk I - CS and 2pdr 

        I love these machines with "old designs". The Crusaders represent very well the beasts of the early stages of WWII.

        Thanks for following...