as I recall, the military has been huge on using a few fuel types for many vehicles--- as such, for example, JP8 can be used in or HMMWV's... At least, before we started up-armoring them and etc....
If I am not mistaken, and please correct me if I am, WWII used AVGAS, which is 100 octane, similiar to racing fuels, which could be used in non-diesel vehicles, which COULD be found at a VBase.... I dont know, I kind of like the idea---- running low on fuel, stop at a vbase, wait a little longer, but get some fuel to continue the flight home....