Whatever it was supposed to be it was a heck of a shot. Don't know how realistic the walking legs were, but for entertainment purposes, it was pretty good.
I remember reading a book titled Currahee. The author was with the 506th, same as Band of Brothers and wrote the book sometime in the 60's. There is a story about an attack on a position reinforced with 88's and a vivid description of a set of torso-less legs complete with canteen on the belt running beside the author.