I would think until the weight and charging issues were worked out it would be a real problem to incorporate an all electric fleet in combat zones. When I was last in in the mid 70's the multi fuel trucks would burn diesel or gas.There were placards on the deuce and a halfs and 5 tons that said NO AVIATION fuel.Cold weather is a battery killer as well and would need addressed.
I could see them being able to make less complicated to work on then the new all electronic controlled systems in use in today's vehicles. A quick change battery system could be done fairly easily as well.
they recommend running a quart of motor oil to lube the injectors for every 5-10 gallons of gas
I suspect the av gas warning had something to do with Ethanol or Methanol in some of the av gas , 100 low lead ave gas with a quart of oil new or used filtered and or hydraulic fluid or AFT to lube the injectors per every 7 gallons should run fine
jet A is basically Kerosene
Jet B is basically 30% kerosene and 70% gasoline
JP-5 is approximately winterized diesel a low flash point Kerosene or K1
the warning may have also been that Jet A and B lack the lube of diesel or motor K1 , but they would burn fine and be fine with a little oil to lube the injectors
#2 home heating oil should work also you may have to change filters a bit more as it has a lot more wax solids
either way it is a very versatile design and run the best on #2 diesel