i really like those kopis shaped ones, i'll need to keep my eyes open for one.
remind me a lot of my more humble one
the fascine was a bundle of sticks used to support earthworks, here's one from yorktown, i had the pleasure of being stationed there for three months. this one would have been filled with earth and arranged vertically as shown to produce a bulwark or ramparts, early sandbags.
fascine knives/ swords were popular with artillery and engineers.