The description below is taken from the Airfix catalogue this kit was first seen in. There is also extra information underneath the main catalogues description including the changes to the name of this kit in the catalogues.
Airfix Catalogue description:Proving to be an invaluable wartime asset, the Case series of military tractors were used for a multitude of essential tasks, from towing aircraft and supplies around airfields, to assisting with the construction of new airfields all over the world. Despite many hundreds of units being sent to warzones across the globe, few of these hard working vehicles would make it back to the US, simply staying where they had been deployed and used during the rebuilding of a world after war.
This kit appeared in these catalogues:
2020 Edition Ref: TBC
Just some of the kits listed...