That's funny - it looks just like the 'field installed' attachments fabricated and welded to the front of WWII tanks in the French countryside, added just after the invasion of Normandy. A tank mechanic came up with the idea so that all of the tanks could individually break through the thick hedgerows there rather than having to use the clearings made by a handful of dozer tanks. The Germans would simply wait at a clearing made by a dozer until a US tank appeared, then shoot it. With the new attachment, the Germans never again knew where a tank would break through a hedgerow, and hence were caught off guard most of the time. Very effective tool indeed. I need one!!!