>>63915964
>Wtf has the guy at the centre below has on the top of his head?
I like to imagine that the officer he's talking to is asking him that precise question.

>Pvt anon, why do you have a jock strap on your head in place of your regulation beret?
It's more likely that it's just a radio headset that's pushed back so he can hear what the officer is saying.
I favour this because he's armed with a pistol like a tanker or radio operator despite not being obviously an officer himself.