Gun Carrier (3-in)

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Gun Carrier, 3-inch, Mk I, Churchill (A22D)
General characteristics
4 peopleCrew
104 %Visibility
front / side / backArmour
89 / 76 / 25Hull
89 / 76 / 25Turret
39 tWeight
668 hp350 hpEngine power
17.1 hp/t9 hp/tPower-to-weight ratio
28 km/h forward
3 km/h back
26 km/h forward
3 km/h back
76 mm OQF 3in 20cwt cannonMain weapon
65 roundsAmmunition
6.3 / 8.1 sReload
-10° / 15°Vertical guidance
-5° / 5°Horizontal guidance
11000 Rp icon.pngResearch
38000 Sl icon.pngPurchase
Sl icon.png2180 / 2696/1620 / 2003/1230 / 1521Repair
11000 Sl icon.pngCrew training
38000 Sl icon.pngExperts
210 Ge icon.pngAces
124 % Rp icon.pngReward for battle
130 % Sl icon.png110 % Sl icon.png70 % Sl icon.png


GarageImage 3inchGunCarrier.jpg

The Gun Carrier, 3-inch, Mk I, Churchill (A22D) is a rank II British tank destroyer with a battle rating of 3.0 (AB/RB/SB). It was introduced along with the initial British ground tree in Update 1.55 "Royal Armour". This abomination of a vehicle is based on a Churchill chassis. It sport a 3-inch gun that they couldn't fit into a normal Churchill turret, but in the world's boxiest crew compartment. In all seriousness, you will likely see the tracks (and suspension) before you see anything else. Once you've recognized that there is no turret, then you know its a 3-inch Gun Carrier.

The 3-inch Gun Carrier is an interesting tank that can be difficult to play. Combining the aspects of an assault gun and a tank destroyer, it has a strange play style. At longer ranges, getting a penetration with the main gun can be difficult whilst the small arc and low turn rate makes close quarters fighting extremely hazardous. The first thing to take note of is your armour - at 89mm on the front you are one of the toughest vehicles at this rank. However this armour is flat and unsloped. At the sides the armour drops to 76 mm and the rear is only 25 mm thick meaning that, when combined with the positioning of the crew, a penetration from either of these angles is usually deadly.

General info

Survivability and armour

Armour type:

  • Rolled homogeneous armour
  • Cast homogeneous armour (Gun mount, Cupola)
Armour Front Sides Rear Roof
Hull 38 mm (69°) Front glacis
76.2 mm (17°) Lower glacis
76.2 mm 25.4 mm Top
25.4 mm (68°)Bottom
16 mm
Superstructure 89 mm
100 mm (2-46°)Gun mount
76.2 mm 25.4 mm 16 mm
40 mm Cupola


  • Suspension wheels and chassis construction are 20 mm thick while tracks are 30 mm thick.


Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 28 3 39 497 668 12.74 17.13
Realistic 26 3 310 350 7.95 8.97


Main armament

Main article: OQF 3in 20cwt (76 mm)
76 mm OQF 3in 20cwt Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 65 -10°/+15° ±5° N/A 3.96 5.48 6.66 7.37 7.84 8.19 7.25 6.67 6.30
Realistic 2.68 3.15 3.82 4.23 4.50


Penetration statistics
Ammunition Type of
Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Shot Mk.2 AP 111 109 97 84 73 64
Shell HE HE 9 9 9 9 9 9
Shell details
Ammunition Type of
Mass (kg)
Fuse delay
Fuse sensitivity
Explosive Mass
(TNT equivalent) (g)
Normalization At 30°
from horizontal
0% 50% 100%
Shot Mk.2 AP 762 5.67 N/A N/A N/A -1° 47° 60° 65°
Shell HE HE 609 7.26 0.4 0.5 530 +0° 79° 80° 81°

Ammo racks

Ammo racks of the Gun Carrier (3-in)
rack empty
rack empty
rack empty
rack empty
rack empty
65 53 (+12) 40 (+25) 27 (+38) 14 (+51) (+64) No

Left side empty: 27 (+38)


Gun Carrier (3-in) Optics
Which ones Default magnification Maximum magnification
Main Gun optics x1.85 x3.5
Comparable optics Marder III H

Usage in battles

The first thing you need to worry about are your flanks. If the enemy gets on to these you will usually be knocked out pretty quickly and with the pathetic turn rate you will rarely be able to respond. When positioning yourself make sure that your flanks are covered. The best way to do this is to position yourself in the centre of a narrow street or park up directly next to a large rock or building. Alternatively try to alert your comrades to your position and needs though if you have my luck then this will be a last resort.

Next angle yourself. With a bit of angling you can get your frontal and side armour to be effectively around 100mm thick together, meaning that only F2's will be able to take you from beyond short range. Finally, try to get below a bridge or overhang. Enemy aircraft love the 3" Gun Carrier's large, ponderous form and the thin top armour can be penetrated by some of the heavier armaments carried by fighters.

You want to prioritize Panzer IV F2's as these will make mincemeat of your tank. Go for the gunners position unless you have a shot at the hull and are confident that you will take it out in a single shell. T-34's beyond 100 meters are tricky as well, but they also struggle with penetrating your armour. So its best to try and ignore them unless you are confident about it. Everything else should be a relatively easy target, but watch out for the enemy maneuvering to your sides in fast tanks. A tank on your flank is a sure way to get yourself destroyed since a single APHE shell from a German or Soviet tank could knock out the entire crew if it penetrates.


Tier Mobility Protection Firepower
I Tracks Parts Horizontal Drive
II Suspension Brake System FPE Adjustment of Fire
III Filters Crew Replenishment Elevation Mechanism
IV Transmission Engine

Pros and cons


  • Good frontal armour, can become practically invulnerable to incoming shells if angled properly
  • Good gun with decent damage
  • Can turn in place


  • Large target
  • Slow
  • Four crew members
  • Vulnerable top, can be strafed by planes and set on fire
  • Flat armour



In 1941, the British General Staff requested for tanks that can mount a high-velocity cannon. The purpose of this is to create an "expedient design to deal with enemy tanks until the 17-pounder became widespread" due to the risk of a German invasion on the British islands. None of the tanks at the time of this request had the necessary specifications to mount a heavier and larger cannon, the Churchill and Valentine tanks could only hold the 6-pounders. To fix this, it was proposed that a casemate superstructure be used in the design to hold the heavier gun instead, akin to the typical tank destroyer used by Germany and Soviet Union at the time. The company Vauxhall was given 100 of the obsolete 3-inch guns and were tasked to produce a vehicle able to mount these guns. Designing was finished in April 1941, a mock up produced in July, and the first pilot vehicles were finished in early 1942, ready for testing. During these stages, the Department of Tank Design put in an order for 100 of these vehicles. The pilot vehicle was essentially a large 88 mm armoured superstructure with the 3-inch gun mounted in a ball mount, the entire thing was propelled on a Churchill chassis. The tests proved that the vehicles preformed satisfactory and could work, but with the now reduced risk of a German invasion and better equipment becoming to be more widespread, the orders placed on the vehicles wavered to only about 49 vehicles in January 1942. Production for the Carrier, Churchill, 3-inch Gun, Mk I proceeded from May 1942 to November 2, producing 50 3-inch Gun Carriers total.

Proposed usage

The 3-inch Gun Carrier never saw combat, but it wasn't ignored during its production life. In April 1942, it was proposed that several army tank brigades of Canada be equipped with these 3-inch Gun Carriers, of which 9 would be received and would be split to three troops of three Carriers. It was proposed by Brigadier R.A. Wyman, the commander of the 1st Canadian Army Tank Brigade, that these Carriers be distributed as anti-tank groups. A new company in the brigade system known as the "Heavy Support Company" would man the Carriers and the system would run like an anti-tank regiment in an infantry division. These companies would have about 97 personnel, with 28 headquarters and the rest in the troops, and these were to be assigned to army tank battalions. This was approved in June 24, 1942 by Canadian Military Headquarters and the formation of such unit commenced.

Formation of the Heavy Support Company in the 1st Canadian Army Tank brigade drew its ranks from the brigade, with Captain G.S.G. Jones as the commander of the company, nominated by the brigade regiments. Doctrine, organization, and training were discussed in July 15. Despite the preparation, the Carriers were never delivered until September 1942. During training, it was found that the Carriers had a tendency to throw their track while turning at speed higher than 10 mph. In October, the company was redesignated as a "squadron" to conform to armour nomenclature in the Canadian Armoured Corp. By November, there were 10 Carriers available for the squadron. In February 1943, the 1st Canadian Corps then ordered that the Heavy Support Squadron in the 1st Canadian Army Tank Brigade be broken up immediately, perhaps due to the Carrier's growing obsolesce with the evolution of tank warfare. By March 1943, all the Carriers were returned or stored away and the squadron was dismissed.


Skin and Camouflages for the 3-inch Gun Carrier in Warthunder Live.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the vehicles;
  • links to approximate analogues of other nations and research trees.

External links

Britain tank destroyers
Based on cruiser tanks  QF 3.7 Ram
Based on infantry tanks  Gun Carrier (3-in) · Archer
M10 Achilles  Achilles · Achilles (65 Rg.)
End war  Avenger · Tortoise
Post-war  Charioteer Mk VII · FV4005 · Conway · Rooikat 105
ATGM  Swingfire · Striker