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United States
Light Tank M2A4
Ordnance classification - M2A4

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The Light Tank M2A4 based on the existing Light Tank and was in use from 1939.

Flag of World War 2 United States

General Details
Specifications
Operational Date(s)1939
Ordnance classificationM2A4
Quantity Produced375
Weightunknown
Crew4
M.G's small4
M.G's large(>10mm)n/a
Length4.48 mtr
Width2.56 mtr
Height2.56 mtr
Engine Details/Performance
Max Road Speed34 mph
Max Cross Country Speed25 mph
Range Road130 miles
Range Cross Countryunknown
Fuel TypePetrol
Fuel Capacity54 gal
Horse Power250 hp
Power/Weightunknown
General Information
The Light Tank M2A4 based on the existing Light Tank and was in use from 1939.

It was armed with 4 light machine guns. Its main armament consisted of a 37mm Antitank Gun M6 which could penetrate 64 mm of flat plate at 200 metres


Armour Details
Turret
Front25mm@(25mm)
Side19mm@(19mm)
Rear19mm@(19mm)
Top10mm@90°(10mm)
Superstructure
Front25mm@45°(35mm)
Side19mm@(19mm)
Rear19mm@(19mm)
Top9mm@90°(9mm)
Hull
Front25mm@45°(35mm)
Side19mm@(19mm)
Rear19mm@(19mm)
Top9mm@90°(9mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 35 mm - Minimum 9 mm



Weapon Details
Flag
37mm Antitank Gun M6
(Anti Tank Gun)
Blank
History
This was the Tank mounted version of the 37mm M3
ManufacturerWatervliet Arsenal
Calibre37mm
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
AP M74 Shot
(AP Armor Piercing)
37mm 0.86Kg 885M/Sec
Quoted Penetration 36mm @ 500mtr/0°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.12 0.24 0.51 1.15 2.01 3.19 4.93 7.73
Penetration(mm@30°) 61 55 48 38 30 22 16 10
Penetration(mm@0°) 71 64 56 45 35 26 19 12
Hit Probability(%) 98 98 98 96 64 25 8 2



HE M63 Shell
(HE High Explosive)
37mm 0.73Kg 792M/Sec 0.039Kg explosive
Maximum Range not shown as gun elevation is limited
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.27 0.57 1.29 2.25 3.56 5.51 8.63
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.27 0.57 1.29 2.25 3.56 5.51 8.63
Hit Probability(%) 98 98 98 93 57 22 3 1
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill0 mtr Burst radius Infantry in open 66% kill1 mtr
Burst radius Infantry in open 33% kill3 mtr  Armour Penetration inc roof at 1 mtr0 mm
An explosion within 1 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 3 mtr of infantry in the open will cause 33% casualties.
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will not cause any significant armour damage.

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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