This is a quote from John Hart at Keltoi's site:

The Military Box-Pleated Kilt The term 'box-pleated' is really a misnomer here, as this is actually a knife-pleated kilt with the facing folded back. This intricate and rarely seen style is worn by some military regiments and not offered by many kilt makers. Like the Knife-Pleated Deluxe, it uses seven or more yards of fabric and has a large number of pleats (19-25). Military box-pleated kilts are pleated to the stripe.

http://www.gaelicclothing.com/boxple...ltmilitary.htm