Give me a rest, Weasel.
You're always complaining about non-issued equipment - and in just the next sentence you complain about vehicle crews not wearing helmets. This is just the f'cking dilemma we are facing. There simply is no helmet issued with earphones+microphone and connection to vehicle comms. Crews have to decide wether they were unprotected headsets with the benefit of being able to communicate or wear a plain simple helmet w/o comms, except for the few dozen issued headset that can be worn with the helmet but offer no ear protection.
Or buy your own ***** that you mustn't wear because you represent Germany at the back of beyond...
These guys made the right choice. Wirkung vor Deckung, might ring a bell. And once the fighting begins, hatches are being closed and thankfully you can't see what anyone wears on his head.