What did World War 2 US soldiers with flamethrowers wear?

Answer 1

The US Army and the especially the Marine corps in the pacific made great use of manportable flamethrowers as did many other armies,it was a great liability to wear one these as you could become the very fireball that you were trying to make your enemy,these weapons were generally used with reluctance only when nothing else would winkle out a well dug in enemy,so no special clothing was worn just standard uniform,as nothing would help you if the gas or fuel container got hit,