Light AA Mk I

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Tank, Light AA Mk I
General characteristics
2 peopleCrew
108 %Visibility
front / side / backArmour
14 / 14 / 14Hull
14 / 14 / 14Turret
4.9 tWeight
168 hp88 hpEngine power
34 hp/t18 hp/tPower-to-weight ratio
54 km/h forward
6 km/h back
50 km/h forward
6 km/h back
4 x 7.92 mm BESA machine gunMain weapon
3 600 roundsAmmunition
8.0 / 10.4 sReload
225 roundsBelt capacity
600 shots/minFire rate
4 000 Rp icon.pngResearch
2 100 Sl icon.pngPurchase
Sl icon.png280 / 360/210 / 270/230 / 296Repair
600 Sl icon.pngCrew training
2 100 Sl icon.pngExperts
40 Ge icon.pngAces
100 % Rp icon.pngReward for battle
60 % Sl icon.png30 % Sl icon.png10 % Sl icon.png


GarageImage Light AA Mk I.jpg

The Tank, Light AA Mk I is a rank I British self-propelled anti-aircraft gun with a battle rating of 1.0 (AB/RB/SB). It was introduced in Update 1.79 "Project X".

This tank makes for a good entry-level anti-aircraft vehicle; good speed, manoeuvrability and a devastating short to medium range AA attack. This vehicle should be used in the rear end of an assault, watching the skies for incoming bogies. However, the real ace is that the guns lack accuracy but trade for a sheer volume of fire, filling the skies with a hailstorm of bullets that can discourage bandits from lining up on an attack run. However, anything beyond effective range won't be struck down effectively.

General info

Survivability and armour

  • Cast homogeneous armour (Turret)
  • Rolled homogeneous armour (Hull)
Armour Front (Slope angle) Sides Rear Roof
Hull 14 mm 14 mm 14 mm 4 mm
Turret 14 mm Turret front 14 mm 14 mm N/A

The Light AA Mk I has very little armour. Most of the hull has 14 mm of armour, which is sufficient only against rifle-calibre rounds. However, the gunner is exposed to machine gun fire, and being that there are only 2 crew members, if he dies, the entire vehicle is destroyed. This means even enemy machine guns can kill you if they hit your gunner. You may be able to somewhat protect the gunner by aiming upwards with the machine guns, but this is not reliable. In any case, the Light AA Mk I is vulnerable to any vehicle in the game.


Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 54 6 4.9 125 168 25.51 34.29
Realistic 50 6 78 88 15.92 17.96


Main armament

Main article: BESA (7.92 mm)
7.92 mm BESA (x4) Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity (Belt) Fire rate Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 3,600 (225) 600 -10°/+65° ±180° N/A 52.8 73.1 88.8 98.2 104.5 7.8 7.0 6.4 6.0
Realistic 37.5 42.0 51.0 56.4 60.0


  • Default: Ball · T · IT
  • Universal: AP · T · IT · Ball
  • API-T: IT · IT · AP · T
  • AP-T: AP · AP · IT · T
Penetration statistics
Belt Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Default 8 7 5 3 3 3
Universal 13 11 9 7 4 3
API-T 13 11 9 7 4 3
AP-T 13 11 9 7 4 3

Ammo racks

Ammo racks of the Light AA Mk I
rack empty
rack empty
rack empty
rack empty
16 (+12) (+12) (+12) (+12) Yes


  • 1 belt contains 225 bullets. 3600 bullets in total represent thus 16 belts.
  • However, ammunition is modeled as 50 boxes, grouped in 4 racks (rack 1: 12 boxes, rack 2: 13, rack 3: 13 and rack 4: 12)
  • Racks 1, 2 & 3 will disappear only if you have 4 belts left.
  • If you pack 16, 12 or 8 belts the 4 racks will be displayed as full.
  • Racks will successively disappear if you pack 16 belts and shoot them until depletion.
  • Pack the maximum amount of ammo to go into battle as you are a SPAA.


Light AA Mk I Optics
Which ones Default magnification Maximum magnification
Main Gun optics x2.1 x3.7
Comparable optics M13 MGMC

Usage in battles

The Light AA Mk I is a very vulnerable vehicle, so commanders should be careful not to expose themselves to enemy fire. Take care to find a position where you will not be seen by enemy ground vehicles, and watch the sky. Due to the low velocity of the machine guns, the Light AA Mk I should not open fire until the enemy plane is very close, probably within 1 km. If you begin to fire while the enemy plane is out of range, they will likely divert course and stay away from your position. Also be wary if there is more than one enemy plane up, as you can be strafed to death by machine gun fire. Once you have a good shot on the enemy plane, the 4 machine guns are capable of dealing more damage than one might expect, you can easily down various aircraft quite quickly, although twin engine fighters and bombers will be difficult to destroy.


Tier Mobility Protection Firepower
I Tracks Parts Horizontal Drive Universal
II Suspension Brake System FPE Adjustment of Fire API-T
III Filters Crew Replenishment Elevation Mechanism AP-T
IV Transmission Engine Artillery Support

Pros and cons


  • Great placement as a Rank I SPAA
  • 4 x BESA machine guns mean a high ammo load and a good rate of fire
  • 4 x machine guns means that you have a high hit probability
  • Armour provides some protection from machine-gun fire, though the gunner is vulnerable
  • Excels at taking down fighters
  • Can be used against low tier SPAA and open-top tank destroyers, however, it is best suited to strictly SPAA duties
  • Small and mobile


  • Cannot defend itself from ground attacks, all belts cannot penetrate any tanks
  • Damage output is nowhere near comparable to SPAA armed with 20 mm autocannons at this tier
  • The gunner is exposed to machine-gun fire from above and the front
  • The armour will not protect you from 12.7 mm rounds and above
  • Vulnerable to artillery


The machine-gun armed Mark VI light tank formed the bulk of British tank strength in 1939. They were intended for colonial duties and reconnaissance but would see front-line combat as late as the British defeats in Java in early 1942. In 1940 they were in use in the light tank squadrons of armoured regiments and the main body of the divisional cavalry regiments. They carried a .50 calibre or 15 mm machine gun as the main armament. They were also used in the early war as command vehicles for armoured units.

As they were withdrawn from service, some Mark VI's were converted to anti-aircraft vehicles, raising the superstructure and replacing the turret. In practice the commander also being the gunner was ineffective. British armoured regiments and tank battalions were supposed to have 4-8 of these vehicles each in mid-1942. By mid-1943 they were taken out of service, replaced for this purpose by the significantly more versatile 20 mm-armed Crusader AA Mk II tank.


Excellent additions to the article would be video guides, screenshots from the game, and photos.

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

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the tank;
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Britain anti-aircraft vehicles
Light AA Mk I · T17E2 · AEC AA · Crusader AA Mk II · Crusader AA Mk I · Falcon · Chieftain Marksman · Stormer HVM