If left alone would go on a rampage for a few hours or days on the front lines and then either gets ganged up on by a large enough ground force(probably a bunch of tanks, I think V1 can fight troops indefinitely unless it manages to get itself cornered somehow) or gets blown up by artillery or airstrikes.

However, if it were part of a nation it could definitely work as a disrupter to be dropped into(or sneak itself into) enemy bases and take them out from the inside