Back in Rouge Trader, Marines were a bit more normal.
They were still superhuman,but more like juiced up psycho killers rather than the More Human than Human they are today.
The Marines interacted with humans on an everyday almost equal level.
This was probably a casualty of that storyline,the Military Policeman.
I used the Forge World Mk6 kit and based him at a checkpoint.
I grabbed the Field Police paint scheme straight from the Rouge Trader source book.