[ExSoldier]

My Father in Law was overhead of the beaches in a USMC Corsair on that day and his observation in regards to flame weapons was that there was about 15 seconds worth of flame in the tank and then you had to lug it all over the battle until you could get a refill because if you dropped it you caught hell from the commanders who wanted to use them further inland as well. Then there was the stark terror of lugging the dang thing before you expended the fuel because all JAP snipers were looking for the guys carrying the tanks and they aimed for the tank not the guy, thus insuring immolation.

[Jewbacca]

The modern approach is to use an APC or tank to haul the fuel and spray.

The diesel that runs the thing is mixed with an oxidizer and surfactant and sprayed in.

[hinckley buzzard]

I had familiarization handling of a flame thrower during my training at Ft Knox. It wasn’t all that heavy and I have to admit it was a kick to operate. They were deployed in the assault against the caves with great effect.