The Crusader tank, officially designated Tank, Cruiser, Mk VI, Crusader (A15), was one of the primary British cruiser tanks of the early Second World War. Designed by Nuffield Mechanizations and Aero, it was a direct descendant of the earlier Covenanter (A13 Mk III) cruiser tank and was characterized by its relatively high speed and light armour, intended for exploitation and breakthrough roles rather than direct engagement with heavily armoured opponents.
Development and Design
Development of the Crusader began in 1939, with an initial order placed in 1940. It inherited many design features from the Covenanter, including its Christie suspension system, which contributed to its speed. However, issues with the Covenanter's cooling system led to a redesign for the Crusader, which incorporated a more robust cooling system and an improved Nuffield-Liberty L-12 engine.
The Crusader's design featured a conventional layout with the driver at the front, fighting compartment in the middle, and engine at the rear. Early models were armed with a 2-pounder (40mm) anti-tank gun in the main turret and an auxiliary machine gun turret in the hull front, which was often removed in later production. Its armour was relatively thin, with a maximum thickness of 49 mm (1.9 inches) on the front, making it vulnerable to the more powerful anti-tank guns of German tanks.
Variants
Over 5,000 Crusader tanks were produced, leading to several significant variants:
- Crusader I (Cruiser Mark VI, A15): The initial production model, armed with a 2-pounder gun and a hull-mounted BESA machine gun turret (often removed).
- Crusader II (Cruiser Mark VIA): Featured increased armour protection on the front hull and turret. The hull machine gun turret was still present but often removed by crews.
- Crusader III (Cruiser Mark VIB): The most significant upgrade, this variant replaced the 2-pounder gun with the more potent 6-pounder (57mm) gun. This required a redesign of the turret and typically reduced the crew from five to three. It entered service in mid-1942.
- Crusader AA Mk I / II / III: Variants designed for anti-aircraft roles, mounting Bofors 40 mm guns or multiple Oerlikon 20 mm cannons in open-topped turrets.
- Crusader Command: Had the main armament removed and extra radio equipment fitted for command and control purposes.
- Crusader II Gun Tractor Mk I: A recovery vehicle, with the turret removed and a flat superstructure fitted for towing 17-pounder anti-tank guns.
- Crusader ARV Mk I: An armoured recovery vehicle (ARV) variant.
Operational History
The Crusader tank saw its most extensive combat service in the North African Campaign, starting in 1941. It formed the backbone of British armoured divisions during operations like Operation Battleaxe, Operation Crusader, and the First and Second Battles of El Alamein.
Initially, its speed and reliability were appreciated in the desert environment, allowing for rapid movement and flanking manoeuvres. However, its fundamental weaknesses soon became apparent:
- Undergunned: The 2-pounder gun, while effective against early Italian tanks, struggled against the thicker armour of German Panzer III and Panzer IV tanks, especially at longer ranges. The introduction of the 6-pounder in the Crusader III significantly improved its anti-tank capability but still lagged behind the latest German tank guns.
- Underarmoured: Its light armour made it highly vulnerable to all common German anti-tank weapons, resulting in heavy losses.
- Reliability Issues: While generally good, the Crusader suffered from some mechanical reliability problems, particularly with its engine and cooling system in the harsh desert conditions, although these were often mitigated by field modifications.
Despite these shortcomings, Crusaders played a crucial role in British armoured formations until the arrival of more capable tanks like the American M4 Sherman and the British Cromwell. By the end of 1942 and early 1943, most Crusader tanks were withdrawn from frontline combat in favour of these newer designs. They continued to serve in secondary roles, such as training, reconnaissance, and anti-aircraft duties, for the remainder of the war.
Specifications (Crusader III)
- Weight: 20 tonnes (20 long tons)
- Length: 5.97 m (19 ft 7 in)
- Width: 2.62 m (8 ft 7 in)
- Height: 2.24 m (7 ft 4 in)
- Crew: 3 (commander, gunner, driver)
- Armour: 7–49 mm (0.28–1.93 in)
- Main armament: QF 6-pounder (57 mm) gun (Mk III)
- Secondary armament: 2 × 7.92 mm BESA machine guns
- Engine: Nuffield-Liberty L-12, 12-cylinder petrol, 340 hp (250 kW)
- Power/weight: 17 hp/tonne
- Suspension: Christie
- Operational range: 320 km (200 mi)
- Speed: 42 km/h (26 mph) on road, 24 km/h (15 mph) off-road