He was a brit who came up with all sorts of odd things mounted to the front of tanks, like whirling chains with hammers on the ends for getting rid of mines on the beach. Proved very useful on D day, though some of them looked a little silly.
The hedgerow cutter was teeth welded low on the front of the tank so it would dig in and plow up the hedge row 'stead of rolling up and exposing the thin underside. A simple solution to a big problem.
Clearing mines with that explosive rope isn’t new. When the rope of C4 goes off, it makes a shock wave that detonates any other nearby explosives. Very impressive!