One place invaded by creeping oxeye is Viet Nam. Something we have in common. I don't remember encountering these plants. They are apparently plentiful, and often eaten. We scrounged a lot of stuff to eat as alternatives to C rations. Those are now called MREs (meals ready to eat). They must have improved if they're really readily edible. Anyway, oxeyes were allegedly something soldiers ate, so maybe that memory is just lost in the fog. Like I said, we scrounged a lot. So did the VC. More than once when we swept through one of their camps, they were littered with the cans from Cs we had discarded. But they probably ate oxeyes too.