The Canberra B Mk 6 was the second production run of the English Electric Canberra, improving over the original Mk 2 with more powerful engines, fuel tanks in the wings, and a slightly lengthened fuselage. An interdictor variant known as the Canberra B (I) Mk 6 was also created as an interim prior to introduction of the more dedicated Mk 8, featuring a detachable ventrally mounted gun pod enclosing four 20 mm Hispano cannons, two wing hardpoints to make up for the partially occupied bomb bay, and provision for a toss bombing system allowing the use of nuclear weapons. Entering service in 1955, the Canberra B (I) Mk 6 was soon withdrawn from Bomber Command operations in 1961, but maintained operational readiness in the nuclear delivery role until 1972.

Introduced in Update 1.45 "Steel Generals", the Canberra B (I) Mk 6 is an interdiction model of the famous Canberra bomber, thus it is more suited for aggressive ground attack/interdiction roles by comparison to the B Mk.2 or B-57A models. Much like the B-57B, it retains its bomb carrying capabilities, but also features an impressive battery of armament consisting of four 20 mm Hispano Mk V cannons, each with a 500-round capacity, making it a truly formidable attack aircraft and also allowing for air-to-air combat with other aircraft. The Canberra is surprisingly agile for its size, allowing it to catch opposing aircraft off-guard; coupled with its bomber spawn, it can be highly effective in intercepting other jet bombers or dropping in on unsuspecting fighters from behind enemy lines.