Prior to bush hogging, they used a Takeuchi Brush Cutter
on heavier thickets and growth. I'm not sure which model.
So, pretty much a lawn mower on steroids...
The Bobcat with brush wrecker on it is amazing; it can turns swaths of green into white in short order. A map or two have surprised us when a park has let one of those things loose between scouting and hanging.
Guy, it's just your standard Bush Hog. Nothing special.