THis is nice to take camping in New Mexico.
On the battle field, having assets that can use the same fuel would seem to be a priority, and would simplify the logistics train. If everything there can run on the same fuel the helicopters use, for instance, then that fuel can be shuffled to where it is most needed, and used for everything from fighting to lighting the surgical tent at the aid station.
In WWII, the people who had some of the neatest and most innovative systems...lost the war. The guys who had a lot of basic equipment that ran on the same supply chain won. K.I.S.S. and keep the GFF down.