Steve Firth wrote:

For that I use a billhook, shorter blade but much heavier. Excellent for
trimming away the side branches to leave a bare pole that can be sawn
into lengths suitable for the log burner. The British versions have a
blade on the back edge to be used to cut branches into lengths for the
fire. Sadly Italian versions don't have the edge on the back of the
blade. Apparently this difference goes back to 200AD.

I learn such interesting stuff on this board.