The R400 was called different classifications, such as TH400 and H400. Here is proof: Some years ago, the then Thyssen Henschel developed a complete family of wheeled armoured fighting vehicles as a private venture called the TH-200 (4 × 4), TH-600 (6 × 6) and the TH-800 (8 × 8). Details of these were given in Jane’s Armour and Artillery 1997-98.
Development work on the TH-200 and TH-800 stopped some years ago and Thyssen Henschel subsequently became Henschel Wehrtechnik and development work on the TH-400 continued.
With the acquisition of Thyssen Henschel by Rheinmetall DeTec, the vehicle became the H-400 and, in early 2000, the former company became known as Rheinmetall Landsysteme GmbH.
More recently the designation of the vehicle has been changed yet again to the R-400.
As of mid-2004 there were no plans for the R-400 to enter quantity production. The vehicle has however been used as a testbed for other Rheinmetall company subsystems.