I watched this video this morning. It is a good overview of the American versions of flamethrowers. Such weapons were heavily used in the Pacific Theatre of operations. The gent being interviewed is Charlie Hobson from Flamethrower Expert. Anyway, I found it interesting, so I thought I'd pass it along. Cheers.
There is another interesting video in the same vein. It is the only known functional Japanese Type 100 flamethrower in existence. I just thought I'd pass it along: