

Later Cromwell development led to the creation of the competing Centaur tank (officially the Tank, Cruiser, Mk VIII, Centaur (A27L)).

Early Cromwell development led to the creation of the A24 Cavalier. The name "Cromwell" was initially applied to three vehicles during development. Further development of the Cromwell combined with a high velocity gun led to the Comet tank. The intended dual-purpose high velocity gun could not be fitted in the turret, so a medium velocity dual purpose gun was fitted instead. Named after the English Civil War-era military leader Oliver Cromwell, the Cromwell was the first tank put into service by the British to combine high speed from a powerful, reliable engine (the Rolls-Royce Meteor) and reasonable armour. The Cromwell tank, officially Tank, Cruiser, Mk VIII, Cromwell (A27M), was one of the series of cruiser tanks fielded by Britain in the Second World War. 40 mph (64 km/h) maximum with 3.7:1 final reduction drive.
