In the late 1960s, the South African military began changing its doctrine towards highly mobile warfare, embodied by small mechanized infantry units. The change in doctrine was necessitated when the military realized that heavy armour faced extreme difficulties operating in rural areas of the country. As a result, the army needed a new ICVnot only to ferry troops into battle but also to actively support them in the field. To that extent, a basic requirement for an ICV was formulated and a number of both domestic and well as foreign designs were evaluated. The domestic Springfield-Büssing company developed a promising six-wheel ICVprototype, called the Buffel, constructed on the basis of a MAN truck. The further developed Buffel prototype was eventually selected for procurement and entered service with the military as the 'Ratel'. Production of the Ratel began in the mid 1970s, after a limited initial batch of production vehicles successfully underwent testing. Being a family of fighting vehicles, the Ratel came in various modifications, including the base model armed with a 20 mm cannon, two mortar versions, a close fire support variant armed with a 90 mm gun, as well as a command and ATGM carrier modifications. Ratels served in numerous conflicts since their first introduction in the mid 1970s, with nearly all of its active service taking place on the African continent. The Ratel 90 saw its first combat use in 1980 during the South African Border War, where Ratel 90 anti-tank teams came face to face with T-54/55s on multiple occasions. By the end of production in 1993, some 1304 Ratels were produced across all variants. Due to its simplistic design and perfect fit for the dry climate of sub-Saharan Africa, the Ratel proved at home in the Middle East and north-west Africa. As a result, around a dozen more nations, excluding South Africa, still operate the Ratel ICV.