Robert, are you preparing to make a military box pleat kilt yourself? Or, are you looking to acquire one already made up?

I would venture that the "twirl" is not as impressive as a knife pleat or your double box pleat because the pleats are shallower and stiffer. In fact, some military box pleat kilts had elastic sewn inside the kilt, behind the pleats, to prevent full extension. But what it lacks in "twirl" is completely made up in its three-dimensional look and bi-directional swing!

w2f