Challenger 2 OES

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Rank VI USA | Premium | Golden Eagles
A-10A Thunderbolt (Early)
This page is about the premium British medium tank Challenger 2 OES. For other versions, see Challenger 2 (Family).
Challenger 2 OES
GarageImage Challenger 2 OES.jpg
Challenger 2 OES
11.3 11.3 11.3
Purchase:9 620 Specs-Card-Eagle.png
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The Challenger 2 OES is a modification for the Challenger 2 tank made to improve its survivability in high intensity battles. With the introduction of ERA blocks covering the sides and front of the vehicle, this protection was meant to deal specially with RPGs and ATGMs in urban combat. The vehicle also received updated protection against IEDs. The upgrade started development based on the Challenger 2 TES, which is almost identical; this upgrade was created as a response to the asymmetric warfare scenario of Iraq 2002, in which IEDs and urban combat doomed many NATO tanks due to their poor protection on the sides. The US developed a similar upgrade with the TUSK ERA package for their M1 Abrams tanks.

Introduced in Update "Air Superiority", the Challenger 2 OES is very similar to other Challenger 2 tanks. However, the increased weight due to the ERA and added composite screens does not include an upgraded engine, which means that the mobility of the Challenger 2 OES is mediocre when compared to earlier Challenger 2s. However, this comes with increased protection against both APFSDS projectiles and ATGMs, the ERA and composite screens are enough to increase the protection against other tanks in critical areas, while they also increase the chances of enemy ATGMs not penetrating the vehicle on the sides of the tank and the turret. However, the weak spot in the lower front plate is still present so take that into consideration and hide your hull whenever possible.

General info

Survivability and armour

Effective action against the cumulative ammunition
Composite armour
Balanced protection against all types of ammunition
Smoke grenades
Creation of a smoke screen in front of the vehicle
Creation of a smoke screen in the direction of movement of the vehicle
Armourfront / side / back
Hull130 / 38 / 50
Turret270 / 80 / 58
Crew4 people
Visibility88 %

Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.

Armour type:

Armour Front (Slope angle) Sides Rear Roof
Hull ___ mm ___ mm Top
___ mm Bottom
___ mm ___ - ___ mm
Turret ___ - ___ mm Turret front
___ mm Gun mantlet
___ - ___ mm ___ - ___ mm ___ - ___ mm
Cupola ___ mm ___ mm ___ mm ___ mm



Speedforward / back
AB66 / 42 km/h
RB and SB60 / 38 km/h
Number of gears8 forward
4 back
Weight74.8 t
Engine power
AB2 322 hp
RB and SB1 217 hp
Power-to-weight ratio
AB31.0 hp/t
RB and SB16.3 hp/t

Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.

Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 66 42 74.8 1,886 2,322 25.21 31.04
Realistic 60 38 1,076 1,217 14.39 16.27

Modifications and economy

Repair cost
AB3 506 Sl icon.png
RB3 375 Sl icon.png
SB4 194 Sl icon.png
Crew training10 000 Sl icon.png
Experts1 560 000 Sl icon.png
Aces2 200 Ge icon.png
Research Aces2 420 000 Rp icon.png
Reward for battleAB / RB / SB
Talisman.png 2 × 150 / 190 / 210 % Sl icon.png
Talisman.png 2 × 244 / 244 / 244 % Rp icon.png
Mobility Protection Firepower
Mods new tank traks.png
Mods new tank suspension.png
Mods new tank break.png
Brake System
Mods new tank filter.png
Mods new tank transmission.png
Mods new tank engine.png
Mods tank tool kit.png
Improved Parts
Mods extinguisher.png
Improved FPE
Mods tank reinforcement uk.png
Crew Replenishment
Mods engine smoke screen system.png
Mods new tank horizontal aiming.png
Horizontal Drive
Mods tank ammo.png
Mods tank ammo.png
Mods tank cannon.png
Adjustment of Fire
Mods thermal sight.png
Mods new tank vertical aiming.png
Elevation Mechanism
Mods smoke screen.png
Smoke grenade
Mods tank laser rangefinder.png
Laser rangefinder
Mods tank ammo.png
Mods art support.png
Artillery Support


Laser rangefinder
Reduces the error and increases the maximum measurable distance of the rangefinder
Night vision device
Improves visibility by enhancing natural light or active illumination.
Thermal imager
Allows to see thermal radiation in the infrared range day and night

Main armament

Two-plane stabilizer
Reduces the swing of the gun in two planes while moving
Ammunition49 rounds
First-order4 rounds
Reloadbasic crew → aces
6.5 → 5.0 s
Vertical guidance-10° / 20°
Main article: L30A1 (120 mm)

Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: {{main|Name of the weapon}}. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.

120 mm L30A1 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 49 -10°/+20° ±180° Two-plane 29.5 40.8 49.6 54.9 58.4 6.50 5.75 5.30 5.00
Realistic 18.4 21.7 26.4 29.2 31.0


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 L23A1 APFSDS 396 394 387 376 367 357
Shell L31A7 HESH 152 152 152 152 152 152
L26 APFSDS 493 491 487 481 474 468
L27A1 APFSDS 564 562 557 551 545 538
Shell details
Ammunition Type of
mass (kg)
Fuse delay
Fuse sensitivity
Explosive mass
(TNT equivalent) (kg)
0% 50% 100%
Shot L23A1 APFSDS 1,535 3.89 - - - 78° 80° 81°
Shell L31A7 HESH 670 17.34 0.1 4 6.53 73° 77° 80°
L26 APFSDS 1,650 4.3 - - - 78° 80° 81°
L27A1 APFSDS 1,650 4.3 - - - 78° 80° 81°
Smoke shell characteristics
Ammunition Velocity
mass (kg)
Screen radius
Screen deploy
time (s)
Screen hold
time (s)
Explosive mass
(TNT equivalent) (g)
L34 670 17.1 20 5 25 50

Ammo racks

rack empty
rack empty
rack empty
rack empty
rack empty
rack empty
49 __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __

Machine guns

Ammunition1 000 rounds
Belt capacity200 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate575 shots/min
Vertical guidance-10° / 50°
Ammunition2 000 rounds
Belt capacity2 000 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate600 shots/min

Offensive and anti-aircraft machine guns not only allow you to fight some aircraft but also are effective against lightly armoured vehicles. Evaluate machine guns and give recommendations on its use.

12.7 mm M2HB
Mount Capacity (Belt) Fire rate Vertical Horizontal
Pintle 1,000 (200) 575 -10°/+50° ±180°
7.62 mm L94A1
Mount Capacity (Belt) Fire rate Vertical Horizontal
Coaxial 2,000 (2,000) 600 - -

Usage in battles

Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Pros and cons


  • Retains pros from previous challenger 2:
    • Impressive chemical protection on the front and sides
    • Impressive kinetic protection on either side of the cannon breech, allowing for efficient hull down combat
    • Access to unique and powerful HESH round
    • Very accurate L30A1 120 mm gun, can even fire HESH accurately at a range of several kilometres
    • Fast reload
  • Roof mounted machine gun has access to thermal and can be used as a makeshift CITV for scouting (but not firing, unfortunately)
  • Access to 12.7 mm machine gun, a rare luxury on British tanks
  • Since it is a premium tank, its RP and SL gains are doubled and it can research any British tanks currently in the game


  • The jammer is useless in-game and begs other tanks to scout it out or use HE on it
  • Heaviest MBT in the game with a very poor hp/ton ratio; very poor acceleration
  • Slow turret traverse speed for the BR
  • Very poor steering, turning is slow and costs a great deal of speed, which takes a long time to regain
  • In most situations, can only reach around 40 km/h (25 mph)
  • Also retains weaknesses of previous challenger 2 models:
    • Same ammunition options as the previous Challengers
    • Frontal armour is weak at the lower frontal plate, drivers port, and cannon breech
    • L27A1 has low penetration compared to other top rank NATO ammunition, however reload speed does compensate for this
    • Cannot maintain the short reload time after the first-stage ammo rack (4 rounds) has been depleted


Describe the history of the creation and combat usage of the vehicle in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).



See also

Related development

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • other literature.

Britain medium tanks
Valentine  Valentine I · Valentine IX · Valentine XI
Cromwell  Cromwell I · Cromwell V · Cromwell V (RP-3)
Cromwell derivatives  Challenger · Avenger · Comet I · Comet I "Iron Duke IV" · Charioteer Mk VII
Centurion  Centurion Mk 1 · Centurion Mk.2 · Centurion Mk 3 · Centurion Mk.5 AVRE · Centurion Mk 10 · Centurion Action X · FV4202
Vickers MBT  Vickers Mk.1 · Vickers Mk.3 · Vickers Mk.7
Chieftain  Chieftain Mk 3 · Chieftain Mk 5 · Chieftain Mk 10
Challenger 1  Challenger Mk.2 · Challenger Mk.3 · Challenger DS
Challenger 2  Challenger 2 · Challenger 2 (2F) · Challenger 2 TES · Challenger 2 OES · Challenger 2E · Challenger 2 Black Night
Challenger 3  Challenger 3 TD
Australia  A.C.I · A.C.IV · Centurion Mk.5/1
South Africa  Olifant Mk.1A · Olifant Mk.2 · TTD
India  Vijayanta · Bhishma TWMP
Israel  ▄Sho't Kal Dalet
Jordan  Khalid
Sweden  ▄Strv 81 (RB 52)
USA  Grant I · Sherman II · Sherman Firefly · Sherman IC "Trzyniec"

Britain premium ground vehicles
Light tanks  A13 Mk I (3rd R.T.R.) · A13 Mk II 1939 · AEC Mk II · Crusader "The Saint" · Rooikat 105
Medium tanks  A.C.I · Grant I · Cromwell V (RP-3) · Sherman IC "Trzyniec" · A.C.IV · Comet I "Iron Duke IV"
  Centurion Mk.2 · ▄Strv 81 (RB 52) · Centurion Mk.5 AVRE · Centurion Mk.5/1 · ▄Sho't Kal Dalet · Centurion Action X
  Vijayanta · Khalid · Challenger DS · Challenger 2 OES
Heavy tanks  Independent · Matilda Hedgehog · Excelsior · TOG II · Churchill Crocodile · Black Prince
Tank destroyers  Alecto I · Achilles (65 Rg.) · QF 3.7 Ram