Image: Firefly (IWM)
YearMarch 1944
Vehicle TypeMedium Tank
Origin & DesignerUSA/Royal Ordnance Factories
Numbers Produced2.246 (All Models)
Crew4 (Commander/Gunner, Loader, Radio Operator & Driver)
Main Armament1 x OQF 17 pdr L/55 Mk. IV Gun
Main Armament[@sponson_traverse]
Elevation-5° to +20°
Turret Traverse360° (Powered)
Gun Traverse[@gun_traverse]
Gun Mount[@gun_mounts]
Maximum Range[@maximum_range]
Armour Penetration[@armour_penetration]
Gun SightNo. 43 ML Mk. III
Secondary Armament1 x 7.62mm Browning M1919 Machine Gun (Coaxial)
Smoke Discharger[@smoke_discharger]
Ammunition Carried77 x 76.2mm Rounds + 5000 x .7.62mm Rounds
Combat Weight32.700 kg
Ground Clearance0.43m
Fording Depth1.0m
Trench Crossing2.30m
Obstacle Clearance0.61m
Climbing Ability31°
RadioNo. 19 Set
ArmourHull Front: 51mm.
Hull Sides: 38mm.
Hull Rear: 38mm.
Hull Top: 25mm.
Hull Bottom: 13mm.
Gun Mantlet: 89mm.
Turret Front: 76mm.
Turret Sides: 51mm.
Turret Rear: 64mm.
Turret Top: 25mm.
EngineChrysler Multibank A57 (Petrol)
Transmission5 Forward & 1 Reverse
Maximum Road Range161 km
Maximum Cross Country Range[@maximum_cross_country_range]
Maximum Water Range[@maximum_water_range]
Maximum Road Speed40 kph
Maximum Cross Country Speed28 kph
Maximum Water Speed[@maximum_water_speed]
VariantsSherman Firefly VC (M4A4) Sherman IC Firefly (Welded hull and cast turret) Sherman Firefly Hybrid IC (Cast hull and turret)
NotesThe British military desperately needed a tank to allow their armored units to be able to engage German tanks at ranges over 1000m, so they merged the 17 pdr with stocks of Sherman M4s, this initially caused problems due to the size of the turret, the gun breech was rotated so that the gun could be loaded from the side, the turret radio had to be placed in an armoured box located at the turret rear, a new hatch was cut in the turret to allow for the Gunner or loader to escape and finally the hull machine gunner was omitted and extra ammunition racks added.
The Firefly was first used in Normandy. They were issued at one per troop of Sherman’s giving the troop three Sherman’s and one Firefly.