The hull was redesigned with welded, sloped armour and featured a partially cast turret with the highly regarded 17 pounder (76.2 mm/3-inch) as the main gun and a 20 mm Polsten cannon in an independent mounting to its left.
The new Centurion Mark III also featured a fully automatic stabilisation system for the gun, allowing it to fire accurately while on the move, dramatically improving battlefield performance.
[26] One disadvantage of earlier versions was the limited range, initially just 65 miles (105 km) on hard roads, hence external auxiliary tanks and then a "monowheel" trailer were used.
[37] In 1955, Sir Edward Boyle (the Parliamentary Secretary to the Minister of Supply) told the House of Commons that "the cost of the Centurion tank has been coming down recently as production has settled into its stride.
[40] Operating in sub-zero temperatures, the 8th Hussars learnt the rigors of winter warfare: their tanks had to be parked on straw to prevent the steel tracks from freezing to the ground.
[43] By early 1952, with the Cold War heating up, NATO needed modern heavy tanks to meet the T-34 versions with the Warsaw Pact countries, and to deter Soviet forces by stationing them with the BAOR in West Germany, where the French had just the light AMX-13, and the Germans had none.
During the Suez Crisis, British ground commander General Sir Hugh Stockwell believed that methodical and systematic armoured operations centred on the Centurion would be the key to victory.
[46] After establishing themselves in a position in downtown Port Said, 42 Commando headed down the Shari Muhammad Ali, the main north–south road to link up with the French forces at the Raswa bridge and the Inner Basin lock.
[48] The 20-pdr armed[49] Australian Centurions of 'C' Squadron, 1st Armoured Regiment landed in South Vietnam on 24 February 1968, being headquartered at Nui Dat in III Corps (MR3).
[52] When he temporarily took over command during Brigadier Ronald Hughes's absence, he directed that the Centurions be brought up from Nui Dat to reinforce firebases Coral and Balmoral, believing that they were a strong element that were not being used.
[60] On the other side, when Pakistani Army armoured division primary composed of M47 and M48 Pattons, they proved to be able to penetrate only a few of the Centurion tanks, as witnessed in the Battle of Chawinda in the Sialkot sector.
[41] The upgrades included thicker armour, new turret rotating mechanism, new gun stabiliser, improved ammunition layout with more rounds, and increased fuel capacity.
The Sho't Kal version of Centurion earned its legendary status during the Battle of "The Valley of Tears" on the Golan Heights in the 1973 Yom Kippur War.
During the Yom Kippur War, the Jordanian 40th Armoured Brigade was deployed in the Golan front to support Syrian troops and show King Hussein's concern for Arab solidarity.
In 1982–1985, 293 surviving Centurions of the Jordanian Army were refitted with the diesel engine and transmission of the M60A1 tank in place of the original Meteor petrol engine, Belgian SABCA computerised fire-control system, which incorporated a laser range-finder and passive night sight for the gunner, Cadillac Gage electro-hydraulic turret drive and stabilisation system and a new Teledyne Continental hydropneumatic suspension in place of the Horstmann units.
[85] Following South Africa's withdrawal from the Commonwealth in 1961, its priorities shifted toward internal security and diversifying national arms procurement outside traditional suppliers such as the United Kingdom.
[83] The remaining Centurions were largely relegated to reserve roles as a result of maintenance problems compounded by parts shortages and a tendency to overheat in the hot African climate.
[85] Operation Savannah was followed by further modifications and trials under Project Semel, and the South African government was obliged to finance the creation of a new private sector enterprise, the Olifant Manufacturing Company (OMC), to refurbish the Centurions.
[85] During this period South Africa managed to restore its tank fleet to its original size by purchasing a number of surplus Centurion hulls from Jordan and India.
[87] The passage of United Nations Security Council Resolution 418, which imposed a mandatory arms embargo on the country, forced South Africa to purchase the hulls without turrets or armament.
[85] At length the South African mechanised infantry, bolstered by Eland and Ratel-90 armoured car squadrons, succeeded in destroying the tanks on their own, although severe delays were encountered due to their lack of adequate anti-tank weaponry.
[88] The collapse of the Lusaka Accords and the subsequent launch of Operation Moduler in late 1987 led to the Olifant squadron being reactivated on the direct orders of South African State President P.W.
[89] Throughout Operation Moduler, South African forces typically dispersed into an "arrowhead" formation, with Olifants in the lead, Ratel-90 armoured cars on the flanks, and the remainder of the mechanised infantry to the rear and centre.
[91][92] A number of others suffered varying degrees of track and suspension damage due to mines or Angolan tank fire, but were able to keep moving after field repairs.
[87] At the end of the Second World War, it was clear that the mix of tanks in service with the Swedish Armed Forces was not just obsolete but also presented a large logistical problem.
Kungliga Arméförvaltningens Tygavdelning (KAFT, the weapons bureau of the army administrative service) conducted a study that concluded that the most cost-effective alternative would be to purchase the newly developed Centurion Mk 3, which, while quite modern, was judged to also have upgrade potential for future requirements.
Minister of Defence Torsten Nilsson arbitrarily placed an order of 80 Mk 3, with Swedish Army designation Stridsvagn 81 (Strv 81), around new year 1952/1953, with the first delivery in April 1953.
Between 1983 and 1987, the Centurions had a midlife renovation and modification (REMO) done, which included among other things night vision equipment, targeting systems, laser range finders, improved gun stabilisation, thermal sleeves on the barrel and exhaust pipes and reactive armour developed by the Swedish FFV Ordnance.
Antennae were missing, lights and periscopes were heavily sandblasted, the cloth mantlet cover was incinerated, and the armoured side plates had been blown off and carried up to 200 yards (180 m) from the tank.
The turret crew were all wounded by fragmentation as the RPG hollow charge jet entered the lower left side of the fighting compartment, travelled diagonally across the floor and lodged in the rear right corner.