In Iraq, we weren't allowed to carry firearms, but we could carry any knife we desired. I even saw some folks walking around with what I'd consider short swords. My choices were fixed blades from 6 to 14 inches blade length. I also had a couple folders. We carried these around the IZ, out in the red zone, and on various bases without any consideration.
I sure wish they hadn't taken our FALs away. I'd much rather have had one of those.
Someone asked me why I had such a big knife once. I answered matter of fact: "For lopping heads, of course." They choked on their coffee.
Not everyone had a sense of humor about it, though. Apparently a big man holding a big knife wearing a shemaugh wrapped around his head is cause for concern to some, even in Baghdad.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)