Image: M18 GMC (U.S. National Archive)
YearJuly 1943
Vehicle Type[@type]
Origin & Designer[@designer]
Numbers Produced2.507
Crew5 (Commander, Gunner, Loader, Driver & Assistant Driver)
Main Armament1 x 76mm L/55 M1A1 or M3 Gun
Main Armament[@sponson_traverse]
Elevation-10° to +20°
Turret Traverse360° (Powered)
Gun Traverse[@gun_traverse]
Gun Mount[@gun_mounts]
Maximum Range[@maximum_range]
Armour Penetration[@armour_penetration]
Gun Sight6.65m
Secondary Armament1 x .50 cal M2HB Heavy Machine Gun (AA Mount)
Smoke Discharger[@smoke_discharger]
Ammunition CarriedAmmunition Carried: 45 x 76mm & 800 x .50 cal
Combat Weight18.000 kg
Ground Clearance0.36m
Fording Depth1.22m
Trench Crossing1.86m
Obstacle Clearance0.91m
Climbing Ability31°
RadioSCR 610
ArmourUpper Hull Front: 12mm.
Lower Hull Front: 12mm.
Upper Hull Sides: 12mm.
Lower Hull Sides: 12mm.
Hull Rear: 12mm.
Hull Top: 25mm.
Hull Bottom: 8mm.
Gun Mantlet: 19mm.
Turret Front: 25mm.
Turret Sides: 12mm.
Turret Rear: 12mm.
Turret Top: Open.
EngineContinental R-975 C4 (Petrol)
Transmission3 Forward & 1 Reverse
Maximum Road Range149 miles (240 km)
Maximum Cross Country Range93 miles (150 km)
Maximum Water Range[@maximum_water_range]
Maximum Road Speed50 mph (80 kph)
Maximum Cross Country Speed20 mph (32 kph)
Maximum Water Speed[@maximum_water_speed]
NotesDesigned to be a fast hard hitting Tank Destroyer, the M18 had the combination of good speed and high velocity gun, the chassis was specially developed and the gun was the 76mm M1A2. To achieve high speeds the M18 was lightly armoured. Like all US tank destroyer the turret was opened topped and this kept down the weight. The M18 was built for scoot and shoot tactics rather than standing toe to toe with enemy armour, the 76mm gun was adequate especially if issued with HVAP rounds which gave it better armoured penetration. The M18 served on every fronts.